单项选择题
Manila slings should not be used to load（）.
A.cotton
B.lumber
C.steel
D.tires
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相关考题
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单项选择题
Manila lines in which the strands are right-hand laid（）.
A.should be coiled in a clockwise direction
B.should be coiled in a counterclockwise direction
C.may be coiled either clockwise or counterclockwise
D.should never be coiled -
单项选择题
Limit switches on gravity davits should be tested by（）.
A.the engineers，from a panel in the engine room
B.shutting off the current to the winch
C.pushing the switch lever arm while the winch is running
D.All of the above -
单项选择题
In securing a towing cable，consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by（）.
A.increasing the shaft RPM prior to release
B.using a pelican hook for quick release
C.using preventers
D.using a short chain for the lead through the stern chock
