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The universal lifting spreader is a lifting device used on ______．
A.dockside container cranes
B.shipboard container cranes
C.straddle trucks
D.straddle cranes
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更多 “ The universal lifting spreader is a lifting device used on ______．A.dockside container cranesB.shipboard container cranesC.straddle trucksD.straddle cranes ” 相关考题
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Practice the hoist before lifting patients up as to ensure the hoist is in a good condition.()
此题为判断题(对，错)。
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An automobile sling is used for ________A.lifting aircraft and helicoptersB.lifting any kinds of cargoC.lifting the heavy boxesD.lifting cars and trucks
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The horizontal flat surfaces where the upper stock joins the rudder are the ______.A.rudder keysB.rudder palmsC.lifting flangesD.shoes of the rudder
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Which safety precaution（s）should be observed during crane operations ________．A.Checking for proper lifting from beneath the load during cargo operationsB.Using the proper slings or other lifting devices during cargo operationsC.Relaying communications to port agents on the pier during cargo hoistsD.All of the above
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The preventer guy，as used on a conventional yard and stay rig，______．A.Is rigged at an angle of 70° to 90° from the guy it assistsB.Takes the strain imposed on the schooner guy when burtoning cargoC.Is rigged when lifting cargo that exceeds the SWL of a single whipD.Should take the strain if the regular guy parts
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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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Mechanical lifting of air by the upslope slant of the terrain is called ______.A.vertical liftingB.convective liftingC.advective liftingD.topographic lifting
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单选题The hoist line primarily used for lifting personnel on ship cranes is called the（）.A
personnel lineB
whip lineC
main hoist lineD
pendant
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单选题In cargo crane, （） for lifting the load.A
a hoisting motorB
a luffing motorC
a mooring motorD
a slewing motor
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单选题When the derrick changes its （）(角度), its lifting capacity changes correspondingly.A
angelB
lengthC
heightD
angle
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单选题Generally, when lifting an inflatable life raft back aboard ship you would use the（）.A
towing bridleB
main weather coverC
external lifelinesD
righting strap
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单选题LIFTING THE ANCHOR FROM THE BOTTOM is called（）.A
broaching the anchorB
shifting the anchorC
walking the anchorD
weighing the anchor
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单选题（）is used for lifting cargo.A
A mooring winchB
A windlassC
A deck craneD
A lifeboat engine
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单选题The force acting on a single cargo runner which is vertically lifting or lowering a load is greatest when（）.A
decelerating when lowering the loadB
decelerating when raising the loadC
lowering the load at constant speedD
raising the load at constant speed
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单选题重吊杆用于吊大的重件。（）A
Heavy derrick is used for lifting large heavy cargo.B
Derrick is used for lifting large heavy cargo.C
Heavy derrick is used for lifting dry bulk cargo.D
Derrick is used for lifting dry bulk cargo.
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单选题The hatch at the after end of the canopy in a lifeboat（）the after lifting hook, painter, and tow line.A
give access toB
links up withC
have contact withD
is constructed of
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单选题Any friction fit, tightness or adhesion of the part of any load being lifted should be broken by wedge or tapping and not by increasing the load on the applianceAccording to this sentence, （）A
the lifting appliance can always lift the freight within its rated loadB
attention should be paid in order not to break the wedge when lifting cargoC
sometimes the lifting work needs other assistance other than the lifting applianceD
lifting work should be done with every part fit, tightness or adhesion
考题
单选题The preventer guy，as used on a conventional yard and stay rig，（）.A
is rigged at an angle of 70°to 90°from the guy it assistsB
takes the strain imposed on the schooner guy when burtoning cargoC
is rigged when lifting cargo that exceeds the SWL of a single whipD
should take the strain if the regular guy parts
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单选题The lifting pressure of （） is set in the presence of a Surveyor it is locked and cannot be changed.A
fuel valves of main engineB
injector pump of main engineC
safety valves of marine boilerD
safety valves of a reciprocating pump
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单选题Mousing a cargo hook with marline or small line（）.A
increases the lifting capacity of the hookB
protects the hook from the sling ringC
prevents the sling ring from coming out of the hookD
All of the above
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单选题A spreader bar is used to（）.A
increase the lifting capacityB
increase the lifting radiusC
protect the slingsD
protect the upper part of a load
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单选题A （）(重吊杆)is used for lifting long heavy cargo.A
derrickB
craneC
jumbo boornD
special crane
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单选题In a refrigeration system, which of the following statements describes the actions occurring when a solenoid valves, used in conjunction with an unloader head is energized?（）A
The solenoid valves directs high pressure gas to the valve lifting device raising the suction valve off its seat and causing one specific cylinder to become unloadedB
The solenoid valves directs high pressure gas to the underside of the unloading piston, causing it to rise and allowing the recirculating ports to be openedC
When the solenoid valve becomes energized, the valve ports become closed, allowing discharge pressure to build up above the piston, shifting it and causing it to unloadD
The solenoid valve allows the refrigerant to pass from the suction chamber to the top of the unloader piston, causing the piston to lift and unload the cylinder
考题
单选题Mechanical lifting of air by the upslope slant of the terrain is called（）.A
vertical liftingB
convective liftingC
advective liftingD
topographic lifting
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