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单选题
Most pedestal crane power is provided by（）.
A
Electro-hydraulic units
B
Steam units
C
Independent internal combustion power units
D
All of the above
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Pedestal cranes have limit switches to restrict the movement of which function?______.A.Luff rate limitsB.Slew travel limitsC.Swivel power limitsD.Slew rate limits
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Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply (UPS)?()
A. There is a fire hazard potential if a power outage occurs.B. The last system plugged into the UPS will not be provided any power.C. The UPS will draw more power from the circuit to compensate.D. The runtime of the UPS will be insufficient if a power outage occurs.
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The boom stops on a pedestal crane prevent the boom from ______.A.being raised too highB.swinging at seaC.overloading when not in useD.being lowered too low
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For any given pedestal crane，when the boom is lengthened，the lifting capacity is ______．A.unchangedB.increasedC.eliminatedD.decreased
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Most pedestal crane power is provided by ______．A.Electro-hydraulic unitsB.Steam unitsC.Independent internal combustion power unitsD.All of the above
考题
Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set ________．A.The cranes may be operated independentlyB.The cranes may be interconnected for twin operationC.The cranes are powered by independent internal combustion power unitsD.All of the above
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Which of the following statement（s）is/are TRUE regarding a twin pedestal crane set ________．A.The cranes may be operated independentlyB.The cranes may be interconnected for twin operationC.When twinned，the crane rotation on the foundation assembly is unlimitedD.All of the above
考题
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane ________．A.Taglines are wire rope purchases that raise and lower the jibB.Taglines are wire ropes for horizontal positioning of the rider blockC.Taglines can be fastened to corners of vehicles or containersD.The crane might not have taglines installed in its rigging system
考题
Which wire rope purchases may be used with a 30-ton pedestal crane ________．A.HoistB.LuffC.Rider blockD.All of the above
考题
During which condition should the operator of a pedestal crane shutdown operations ________．A.Bunkering barge alongsideB.Potable water spill on deckC.Crane hydraulic hose burstsD.Trim greater than 4 feet
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During which condition should be operator of a pedestal crane shutdown operations?A.BunkeringB.High windsC.Potable water spill on deckD.More than 3°list
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Which of the following is the MOST likely to cause a server power supply fan to fail but allows the power supply to still be functional？（）A、DustB、Power SurgeC、Excessive humidityD、High temperatures
考题
Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply （UPS）？（）A、 There is a fire hazard potential if a power outage occurs.B、 The last system plugged into the UPS will not be provided any power.C、 The UPS will draw more power from the circuit to compensate.D、 The runtime of the UPS will be insufficient if a power outage occurs.
考题
单选题Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.A
Taglines are wire rope purchases that raise and lower the jibB
Taglines are wire ropes for horizontal positioning of the rider blockC
Taglines can be fastened to corners of vehicles or containersD
The crane might not have taglines installed in its rigging system
考题
单选题What is the purpose of the equalizing beam aboard a crane vessel（）.A
It allows for rotation of the hook in the single modeB
It is required to“twin-up”30-ton pedestal cranesC
It is used to pick up light loadsD
It is used to rigidly connect two cranes
考题
单选题Which of the following statement（s）is/are TRUE regarding a twin pedestal crane set（）.A
The cranes may be operated independentlyB
The cranes may be interconnected for twin operationC
When twinned，the crane rotation on the foundation assembly is unlimitedD
All of the above
考题
单选题For any given pedestal crane,when the boom is lengthened, the lifing capacity is（）.A
unchangedB
increasedC
eliminatedD
decreased
考题
单选题The boom stops on a pedestal crane prevent the boom from（）.A
being raised too highB
swinging at seaC
overloading when not in useD
being lowered too low
考题
单选题During which condition should the operator of a pedestal crane shutdown operations?（）A
LightningB
High windsC
Fire aboardD
All of the above
考题
单选题The crane is usually mounted on a pedestal to offer adequate （） to the operator.A
timeB
spaceC
lengthD
visibility
考题
单选题During which condition should the operator of a pedestal crane shutdown operations?（）A
BunkeringB
High windsC
Potable water spill on deck
考题
单选题Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.A
The cranes may be operated independentlyB
The cranes may be interconnected for twin operationC
The cranes are powered by independent internal combustion power unitsD
All of the above
考题
单选题Which action(s) should the operator of a pedestal crane take if crane control is lost?（）A
Let go of both control levers and return to neutral positionB
Press the emergency stopC
Notify the mate on watchD
All of the above
考题
单选题During which condition should the operator of a pedestal crane shutdown operations?（）A
Bunkering barge alongsideB
Potable water spill on deckC
Crane hydraulic hose burstsD
Trim greater than 4 feet
考题
单选题The center of gravity of a freely swinging load suspended from a pedestal crane acts as if it were located at the（）.A
counterweightB
pedestalC
longitudinal centerlineD
point of suspension
考题
单选题Which of the following can occur if the maximum rated load is exceeded on an uninterruptible power supply (UPS)?（）A
There is a fire hazard potential if a power outage occurs.B
The last system plugged into the UPS will not be provided any power.C
The UPS will draw more power from the circuit to compensate.D
The runtime of the UPS will be insufficient if a power outage occurs.
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