Freight and passenger lifts
Study mode
Question of 123
1. A technical device subject to technical supervision may be operated on the basis of
a) oral or written permission issued by an authorized conservator
b) a valid decision allowing operation issued by the relevant technical supervision authority
c) the CE marking placed on the deviced) a declaration of conformity issued by the manufacturer2. Which of the listed activities does not fall within the responsibilities of the UTB operator
a) performing minor repairs of the device within the scope of their education and skills
b) following the operating instructions regarding the operation of the UTBc) familiarizing themselves with the work plan and the size of the loads being transportedd) all answers are correct3. The terms of maintenance inspections of technical devices
a) are included in the operating instructions of the device
b) are determined by the device conservatorc) are specified in the protocol by the inspector conducting the examinationd) all answers are correct4. Technical supervision is called
a) specific actions defined by law aimed at ensuring the safe operation of technical devices and devices for recovering fuel vapor, as well as actions aimed at ensuring public safety in these areas
b) institutions controlling the technical condition of devicesc) The Office of Technical Supervisiond) UDT, WDT, TDT5. Technical supervision over technical devices is performed by
a) The Office of Technical Supervision and specialized technical supervision units
b) The Office of Technical Supervision and organizations authorized by UDTc) The Office of Technical Supervision and foreign technical supervision unitsd) all answers are correct6. Changing the technical parameters or changing the construction of a technical device is treated as
a) modernization of the technical device
b) repair of the technical devicec) removal of defects and other irregularities of the technical deviced) creation of a new device7. The agreed repair or modernization of technical devices can be performed by
a) the repairer or modernizer who has the authorization issued by the relevant technical supervision authority
b) the operator of the technical device with appropriate experience in repairs or modernizationc) the conservator with appropriate experience in repairs or modernizationd) a competent operator to a small extent8. The Act on technical supervision specifies the following forms of technical supervision
a) total, partial, limited
b) full, limited, simplified
c) full, cyclical, sporadicd) UDT,WDT,TDT9. The decision allowing the operation of a technical device is issued by
a) the conservator after performing an inspection with a positive resultb) the relevant technical supervision authority or the operator of the technical device authorized by the relevant technical supervision authorityc) the relevant technical supervision authority or the public administration authority authorized by the relevant technical supervision authority
d) the relevant technical supervision authority
10. The operator of the technical device may undertake work when
a) the device has a valid decision allowing operation, if required by the relevant regulationsb) has a qualification certificate of the appropriate categoryc) the device has a current positive result of the maintenance inspection
d) all of the above conditions must be met simultaneously
11. The operator of the technical device may undertake work when
a) the device has a current entry in the maintenance log confirming the device's efficiencyb) has completed the appropriate position trainingc) the device has a valid decision allowing for operation
d) all of the above conditions must be met simultaneously
12. In the event of non-compliance with the technical supervision regulations by the operator
a) receives a written warningb) receives post-inspection recommendations
c) is subject to a fine or restriction of freedom
d) answers a and b are correct13. In the event of a threat to human life or health, as well as property and the environment, the inspector
a) issues a decision suspending the operation of the technical device
b) issues a penalty ticketc) formally instructs the operatord) all answers are correct14. In the case of dangerous damage to the technical device or an accident, the operator
a) immediately notifies UDT of the incident
b) informs the manufacturer of the device about the causes of the incidentc) immediately repairs the device and returns it to further operationd) reports the device for repair15. The qualification certificate for operation may be revoked by
a) the authority of the relevant technical supervision unit
b) the operator of the technical devicec) the health and safety inspectord) the National Labor Inspectorate16. Technical devices not subject to technical supervision are
a) cranes with a load capacity of up to 3.2 tb) hoists and winches as well as overhead cranesc) lift trucks and mobile platforms
d) transport slings
17. Technical devices subject to technical supervision are
a) cabin and chair liftsb) storage systems and devices for people with disabilitiesc) freight lifts and ship lifts
d) all answers are correct
18. A dangerous malfunction of a technical device is
a) any defect of the technical deviceb) an unforeseen malfunction, as a result of which the device is suitable for partial operationc) an unforeseen malfunction, as a result of which it is suitable for operation only at reduced parameters
d) an unforeseen malfunction, as a result of which the device is unsuitable for operation or its further operation poses a threat
19. An accident is
a) a sudden event that caused bodily injury or death
b) a sudden event that caused a work interruptionc) a sudden event that results in the exclusion of the technical device from operationd) any defect of the technical device caused by a random reason20. The person responsible for ensuring proper operation and maintenance of the technical device is
a) the operator of the technical device
b) the authority of the relevant technical supervision unitc) the National Labor Inspectorated) the UDT inspector21. The maintenance inspections required by law are performed by
a) a person holding a qualification certificate for maintenanceb) an employee of the manufacturer's authorized service of the technical device (provided they have qualification certificates for maintenance)c) in-house maintenance services
d) answers a and b are correct
22. The maintenance log of the technical device is kept by
a) UDT inspector in the device's audit bookb) authorized operatorc) designated employee of the operating entity
d) maintainer of the technical device
23. Acceptance tests are conducted for technical devices
a) within the timeframes consistent with the provisions of the regulation on technical supervision conditions
b) before issuing the first decision allowing for operation
c) after the repair of the technical deviced) after each change of the operator24. Periodic tests are conducted for technical devices under supervision
a) limited
b) full
c) simplifiedd) all answers are correct25. The absence of the maintainer during the examination of the technical device requires at least
a) prior agreement of this fact with the relevant technical supervision authority
b) submission of a written justification for the maintainer's absencec) submission of a medical certificate confirming the maintainer's inability to workd) all answers are correct26. The candidate for operating a technical device must
a) be at least 18 years old
b) have at least vocational educationc) have at least 1 year of work experienced) all answers are correct27. The operator of the technical device is obliged to stop work when
a) his physical and mental state on the day of work is inappropriateb) he determines that further operation of the device poses a threatc) the device is malfunctioning
d) all answers are correct
28. The terms of maintenance inspections of the device can be specified
a) in the operating manual of the deviceb) in the act on technical supervisionc) in the regulation specifying the technical conditions of technical supervision
d) answers a and c are correct
29. The terms of periodic and extraordinary inspections of the UTB are specified
a) in the act on technical supervision
b) in the regulation specifying the technical conditions of technical supervision
c) in the design documentation of the deviced) in the maintenance log30. The obligation of the operator of the technical device is
a) to follow the operating instructions regarding the operation of the device
b) to follow the operating instructions regarding the maintenance of the devicec) to perform repairs of the deviced) all answers are correct31. A technical device can be operated based on
a) the current sticker from the relevant technical supervision authority specifying the date of the next inspectionb) the current entry of the device's conservator in the maintenance log
c) a valid decision allowing operation issued by the relevant technical supervision authority
d) a positive protocol from the periodic or acceptance inspection32. After performing activities on the technical device, the inspector prepares
a) operating instructions for the device
b) decisions and a protocol of the performed activities
c) CE declarations of conformityd) all answers are correct33. The repair and modernization of a technical device is performed by
a) the operator within their skillsb) the conservator
c) an authorized establishment
d) the user34. The person directly responsible for the safe operation of the technical device is
a) the operator of the device
b) the manufacturer of the devicec) the workplace health and safety inspectord) the UDT inspector35. Information regarding the principles of safe operation of the device is contained in
a) the operating instructions for the device
b) the act on technical supervisionc) the maintenance logd) the protocol from the inspection conducted by the UDT inspector36. As part of the activities before starting work, the operator
a) checks the technical condition of the technical device through inspectionb) performs static and dynamic testsc) performs operational tests of the device
d) answers a and c are correct
37. Qualification certificates for operating technical devices subject to technical supervision are issued by
a) the training company after a positive result of the verification examb) the health and safety inspector based on the certificate of course completionc) the employer based on the passed exam
d) the relevant technical supervision authority
38. Overloading the machine during operation
a) is prohibited
b) is permissiblec) is permissible, but only up to 125% of the rated loadd) is permissible, but only up to 110% of the rated load39. Ad-hoc operational tests are performed, among others,
a) after each fault removal by the maintainer
b) after replacing the load cables
c) once a yeard) after an accident on the device40. The duties of the operator are defined in
a) the operation manual of the device
b) the maintenance logc) the act on technical supervisiond) all answers are correct41. Periodic inspections of technical devices are carried out by
a) a conservator with the appropriate qualification certificate
b) an inspector of the relevant technical supervision authority
c) a manufacturer's service employeed) an operator42. The technical supervision unit is
a) The Office of Technical Supervisionb) Military Technical Supervisionc) Transport Technical Supervision
d) all answers are correct
43. Qualification certificates authorizing the operation of technical devices are valid in the area of
a) the Republic of Poland
b) the European Unionc) have no specified area of validityd) Schengen zone countries44. The obligation to use personal protective equipment by operators of technical devices arises from
a) the manufacturer's operating instructionsb) health and safety regulationsc) internal regulations
d) all answers are correct
45. According to the regulation of the Council of Ministers regarding the types of technical devices subject to technical supervision, the following are subject to technical supervision regulations
a) lifts, cranes, hoists, winches, and lifting devicesb) powered industrial trucks with mechanical lifting drive, mobile platformsc) cable cranes, cabin conveyors, and chairlifts
d) all answers are correct
46. The operating instructions may not contain
a) information about the dates and scope of maintenance inspections of the machineb) basic parameters and purpose of the machine
c) dates of technical examinations carried out by the inspection unit
d) information on how to operate the technical device47. The revision book of the device must contain
a) a collection of protocols from examinations carried out by the inspection unit
b) a document in which maintenance inspections are recordedc) the content of current legal actsd) a list of authorized operators48. The decision issued by UDT
a) is not subject to appealb) can be changed by the PIP inspector
c) is subject to the possibility of appeal by the operator
d) each answer is incorrect49. A person who can take the qualification verification exam is one who
a) has submitted an application for qualification verificationb) is over 18 years oldc) has no health contraindications to operate technical devices
d) all answers are correct
50. After the technical examination with a positive result, the UDT inspector
a) extends the validity of the operator's qualification certificateb) marks the device with a sticker, which is permission to use the devicec) informs the user in writing in the maintenance log that they consent to the operation of the device
d) prepares a protocol of the performed activities and issues an administrative decision allowing for the operation
51. Qualification certificates
a) are valid indefinitelyb) are time-limited with a validity period dependent on the number of points obtained in the exam
c) are time-limited with a validity period in accordance with the provisions of the regulation on the procedure for checking qualifications
d) are valid for a period of 15 years52. Those making modifications to a technical device without agreement with the competent technical supervision authority
a) are subject to a fine or restriction of freedom
b) are subject to a penalty ticketc) are not subject to punishmentd) all answers are incorrect53. Who allows the operation of a technical device without a valid decision permitting operation
a) is subject to a fine or restriction of freedom
b) is not subject to punishment if no accident occursc) is subject only to a fined) is subject to imprisonment54. The operation manual is
a) a collection of information necessary for the safe operation of the device provided by the manufacturer
b) a collection of recommendations issued by the Office of Technical Supervisionc) a manual that must be created by the device userd) all answers are correct55. Qualification certificates are not required for operation
a) if the device is operated by its owner
b) if all mechanisms of the device have manual drive
c) if the device is used for private, non-profit purposesd) from persons over 60 years of age56. A person holding qualification certificates can operate
a) only the devices listed in the scope of the authorization
b) all devices subject to technical supervisionc) other devices subject to technical supervision with the employer's consentd) all UTB with a load capacity of up to 3.2 t57. The operator of a technical device is obliged to
a) refuse to operate the device if the decision allowing the operation of this device has expiredb) always comply with the supervisor's orders regarding the operation of the devicec) comply with the provisions contained in the operating instructions
d) answers a and c are correct
58. Qualification certificates for operating technical devices are
a) valid in the European Union
b) valid with an identity document
c) indefinited) all answers are correct59. An operator who witnesses an accident is obliged to
a) provide assistance to the victim(s) of the accidentb) secure the scene of the incidentc) notify the supervisor
d) all answers are correct
60. Forms of technical supervision are
a) full supervision, simplified supervision, limited supervision
b) acceptance testing, periodic testing, and ad-hoc testingc) UDT, TDT, WDTd) all answers are correct61. Qualification certificates for the operation of technical devices subject to technical supervision are issued by
a) the owner of the device
b) UDT, TDT, WDT
c) PIPd) all answers are incorrect62. The examination board informs the interested person about the result of the exam
a) within 7 days after the exam in writing
b) directly after the exam
c) within 14 days after the exam electronicallyd) by registered mail or email after 30 working days from the date of the exam63. The maintenance log should be kept
a) only in paper form
b) in electronic or paper form
c) only in electronic formd) by the operator64. The workplace instruction
a) is always provided along with the operating instructions by the device manufacturerb) is an unwritten collection of customs adopted in the workplace
c) is issued by the employer and contains detailed guidelines regarding health and safety at the workplace
d) does not apply to operators of mobile devices65. After the expiry date of the qualification certificate for operating the device, the operator
a) can operate the UTB as long as they continue working for the same employerb) can operate the UTB as long as they submit an application for the issuance of another certificate
c) can operate the UTB only after obtaining a new qualification certificate
d) submits an application for an extension of the validity period of the qualification certificate66. The extension of the validity of the qualification certificate occurs
a) upon a written request of the operator
b) automatically after the validity period of the certificate expiresc) upon a written notification from the employer of the operatord) after a prior telephone notification67. The lifting capacity of the UTB is a parameter of the device directly related to
a) the maximum height of the lifted loadb) the maximum volume of the lifted load
c) the maximum mass of the lifted load
d) the product of the mass and volume of the lifted load68. Information regarding the lifting capacity of the device may be included
a) in the operating manualb) on the nameplatec) on the technical device
d) all answers are correct
69. The correct designation of the lifting unit is
a) kg
b) Pac) mthd) mm70. What do we call the danger zone of the hoist doors
a) it is the area where properly functioning hoist doors can be opened without the use of special tools
b) it is the area in front of the tilting hoist doors.c) it is the area where hoist doors can only be opened using toolsd) the place where the bolt is installed71. When the interruption of any safety switch in the control circuit should cause the disconnection of the drive motor with simultaneous activation of the brake
a) after 10 s
b) immediately
c) after stopping at the destinationd) after changing the direction of the cabin movement72. Electrical safety elements should not include
a) hanging contact of the cablesb) contact of the pliers
c) multi-level switch
d) limit switch73. Mechanical safety elements do not include
a) cabin bumpersb) grabbers
c) emergency hatch in the cabin roof
d) all answers are incorrect74. The basic parameters of the elevator are
a) load capacity, speed, lifting heightb) load capacity, lifting height, pit depthc) load capacity, speed, cabin equipment
d) load capacity and number of load ropes
75. The electrical equipment present in the elevator includes
a) ignition switch, alarm signal, basic and emergency lighting of the cabin, limit switches for travel directionsb) ignition switch, emergency STOP switch, alarm signal, safety lock switches, limit switchesc) moving floor contact, grid contact in the cabin
d) each of the above answers is correct.
76. What is the shaft head
a) area in the shaft from the upper landing level to the shaft ceiling
b) room above the shaft ceilingc) area in the shaft from the lower landing level to the shaft floord) glazing in the upper part of the landing doors77. What is the pit
a) area in the shaft from the lower landing level to the shaft floor
b) room above the shaft floor defining the lifting height of the liftc) area in the shaft from the upper landing level to the shaft ceilingd) glazing in the lower part of the landing doors78. What type of drive is used in freight elevators with internal control and hospital elevators
a) only electric
b) only hydraulicc) electric or hydraulicd) all answers are incorrect79. What information should be included inside the lift cabin
a) it is not specified
b) manufacturer, year of construction, serial number, load capacity, shortened operating instructions
c) year of construction, CE mark, number of stops, emergency release instructions, information about the location of the first aid kitd) all technical parameters of the lift80. What should the immediate stop switch be like
a) it should be redb) it should be irreversible (ratchet)c) marked with the word STOP
d) all answers are correct
81. What function do bumpers serve in a lift
a) they keep the platform at the level of the stop during loading or unloadingb) they keep the platform at the level of the extreme stop during loadingc) they limit the travel of the platform beyond the extreme stops
d) all answers are incorrect
82. How long will the grippers hold a cabin loaded to 100% of the lift capacity
a) indefinite time
b) at least 1 hourc) at least 3 hoursd) until the lift is controlled from the cabin upwards83. A freight and passenger lift with friction drive may not be equipped with
a) speed limiter
b) longitudinal torque limiter
c) working movement limiters (limit switches)d) friction wheel84. The mechanical safety element installed in freight lifts with internal control and hospital lifts is
a) drive unit (reducer with friction and driving wheel)
b) speed limiter
c) load ropesd) cabin frame85. In hydraulic lifts, the safety valve in case of hose rupture is used for
a) protecting hoses from tearing due to excessive pressureb) emergency lowering of the cabin when the hydraulic hose ruptures
c) immobilizing the cabin when the hydraulic hose ruptures
d) draining excess hydraulic oil to the tank86. The hatch in the cabin roof is used for
a) evacuation
b) transporting long elementsc) ventilationd) all answers are correct87. If the lighting in the cabin is not working, then
a) you can operate the lift only with your own light sourceb) you can operate the lift, but only downwardsc) you can operate the lift without passengers until the fault is fixed
d) none of the above answers is correct
88. How is the lifting capacity expressed
a) in kg and number of people
b) only in kgc) only in number of peopled) only in kilonewtons89. The notation Q=1000kg/13 people means that the lift can transport
a) a load of 1000kg and the operatorb) the operator can take 13 passengers
c) a load of 600 kg and 5 people along with the operator
d) a load of 1000 kg along with a maximum of 13 people90. Which activity is not included in the daily operation of a lift with internal control
a) checking the operation of limit switches
b) checking if the door restrictors are not damaged and if the doors do not open into the shaftc) checking at each stop if there is no possibility of operating the cabin with the shaft doors unlockedd) checking the operation of the alarm in the lift cabin91. An element of the cargo lift cabin equipment is
a) "alarm" button
b) call panelc) speed limiterd) all answers are correct92. In what position and state should the lift cabin be left when the doors at one of the stops are damaged
a) lower the cabin to the main stop and turn off the lift with the main switchb) leave the cabin at the stop with the damaged doors and turn off with the main switch
c) lower the cabin to the main stop and turn off the lift with the main switch, additionally mark the damaged doors with e.g. warning tape
d) any93. Is it allowed for the operator to exceed the permissible load of the device during normal operation
a) yes, if the operator is not transporting passengers
b) it is not allowed to exceed the permissible load of the device
c) yes, if it is occasionald) only at the request of the supervisor94. What should be done if a dangerous damage to the lift is noticed
a) the device must be stopped immediately, secured against unauthorized use, and the supervisor and other operators must be informed
b) the lift can be used until the end of the shift, and then the supervisor should be informed about the device damagec) no steps should be taken, as the lift has a valid decision allowing for operationd) inform the maintenance technician at the next inspection95. How to safely transport loads on trolleys in the cargo lift cabin
a) load raised on the trolleyb) load lowered, trolley placed centrally in the cabin
c) load lowered, and trolley secured against movement
d) there is no such method96. What actions must a person operating a freight elevator perform before starting work
a) the operator should check if the technical device is functionalb) the operator should ensure that the device has a valid decision allowing for operationc) the operator should ensure that the device has a timely maintenance inspection
d) all answers are correct
97. Can the operator ride in the elevator cabin
a) yes
b) no
c) yes, but only at the request of the supervisord) yes, with the permission of the maintainer98. Where should the operator be in the elevator cabin
a) anywhereb) by the doors
c) by the control panel
d) in the middle of the cabin99. Immediate immobilization and securing of the elevator by the operator should occur after determining that
a) the elevator can be started with the landing doors openb) the glass in the landing doors is brokenc) the elevator does not stop after pressing the STOP button
d) all answers are correct
100. In the event that the total weight of persons and goods exceeds the rated load, the operator's execution of the ride is
a) allowed up to 110% of the rated load
b) not allowed
c) allowed at the request of the maintainerd) allowed up to 125% of the rated load101. Before starting to transport people and goods, the person responsible for checking the correct operation of the crane is
a) the operator
b) the device conservator holding the required legal certification for maintenancec) a person designated by the owner of the device, trained according to the requirements of the device's operating instructionsd) all answers are false102. Before starting work, the operator should check the correct operation of
a) stop buttons and safety locks
b) stop buttons and speed limitersc) limit switches and bumpersd) stop buttons and grippers103. The person responsible for the safe placement of the load during transport is
a) the operator with appropriate qualifications
b) the employee responsible for complying with health and safety regulations on the premisesc) the crane manufacturerd) the crane conservator104. Which of the listed activities are prohibited
a) transporting loads unevenly distributed on the cabin surfaceb) transporting loads with a technically faulty devicec) transporting poorly secured bulk loads
d) all answers are correct
105. What does not belong to the duties of the crane operator
a) replacing bulbs in the control panel
b) checking the correctness of the door lockingc) ensuring the correct placement of transported loadsd) ensuring the safe transport of the load and passengers106. What technical devices can be operated in the requested category
a) freight and passenger elevators with internal control and hospital elevators
b) construction freight and passenger elevators, freight elevatorsc) construction freight elevators, portable and movable freight liftsd) all elevators107. How often are periodic inspections conducted for freight elevators
a) every year
b) every 30 daysc) no less than 30 daysd) every 3 years108. What are, among others, the operator's duties before starting work on the elevator
a) check if the machine room is clean
b) perform a test run
c) check the operation of the load limiterd) perform a test of the grabbers109. What are the operator's duties after finishing work
a) check the condition of the brake operation
b) secure the device to prevent unauthorized persons from entering the cabin
c) record the closure of the elevator in the maintenance logd) perform a test of the speed limiter110. What are the electric switches in safety locks used for
a) stop the operation of the device in case of a break in the hydraulic supply line to the drive system
b) prevent the operation of the device in case of improper locking of the doors
c) stop the operation of the device in case of activation of the gripping deviced) turn off the elevator drive in the extreme position of the cabin111. The task of the safety lock of the landing doors is to prevent
a) opening the landing doors when the cabin is outside the unlocking zone.
b) the movement of the cabin if at least one landing door is not locked.c) answers a and b are correct.d) all answers are incorrect112. The bolt of the landing doors of the lift is
a) a mechanical and electrical safety device
b) exclusively an electrical safety devicec) the bolt of the landing doors is not a safety deviced) all answers are incorrect113. The speed limiter is designed to
a) signal visually and audibly the fact of exceeding the lift's travel speed and the necessity to stop the cabin at the nearest landingb) maintain the lift's travel speed at the level specified by the lift manufacturer and recorded in the technical description of the lift
c) stop the cabin in case of exceeding the lift's travel speed by activating the gripping device
d) all answers are incorrect114. What is the zone of correct stopping of the lift
a) it is the distance between the cabin threshold and the landing threshold, after the cabin has stopped at the landing, ranging from -15 cm to +15 cmb) the entire zone in which properly functioning shaft doors can be opened
c) the zone between the landing threshold and the cabin threshold, after stopping, always ranging from -2 cm to +2 cm
d) the zone specified in the instructions between the landing threshold and the cabin threshold allowing for safe exit from the cabin and its unloading115. The limit switch is used for
a) stopping the cabin at each of the landings with the accuracy specified by the lift manufacturerb) stopping the cabin at the lowest or highest landing with the accuracy specified by the lift manufacturer
c) stopping the cabin in case of passing above the highest or below the lowest landing
d) recording the end of work time116. What are the purpose of the grippers
a) support the cabin during stops at the station
b) serve as a safety device against the free fall of the cabin
c) are used as a personal protective element by maintenance workersd) assist in placing the load in the cabin117. Normal opening of the shaft doors is not possible when the cabin is outside
a) the correct stopping zone
b) the unlocking zone
c) the headroomd) all answers are incorrect118. How many pallets with dimensions height 1.5m width 1m and length 1m and weight 50 kg each can be transported at most at one time by a crane with a lifting capacity of 500 kg and internal cabin dimensions height 2m, width 2.5m and length 4.5m
a) 3b) 7
c) 8
d) 10119. How many trips need to be made with a freight-passenger lift with a nominal lifting capacity of 1200 kg to transport 6 pallets weighing 200 kg each
a) 1 trip
b) 2 trips
c) 3 tripsd) 4 trips120. The operator has to transport 3 small packages weighing 250 kg each with a crane with a lifting capacity of 500 kg. To do this, he will have to make
a) 1 tripb) 2 trips
c) 3 trips
d) 4 trips121. How many trips must be made to transport a load in 100 identical boxes weighing a total of 1000 kg using a hospital crane with a capacity of 1000kg
a) 1
b) 2
c) 3d) 4122. If the crane's capacity is 2000 kg, and the transported pallets weigh 500kg each, how many pallets can be transported at once
a) 3
b) 4 pallets (4x500 kg = 2000kg)c) 5, because we can overload the technical device by 125%d) all answers are incorrect123. How many small packages weighing 100kg each can be transported at once by a crane with internal control and a capacity of 500kg
a) 5b) 3c) 6