單項(xiàng)選擇題It’s not advisable to cut()the power supply.

A.out
B.off
C.down
D.away


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1.單項(xiàng)選擇題It was demanded that the injured crewmembers()at once.

A.was treated
B.would be treated
C.being treated
D.be treated

2.單項(xiàng)選擇題It is NOT advisable to use nylon for alongside towing because it().

A.stretches too much
B.is too difficult to make fast
C.parts too readily
D.is too susceptible to mildew

3.單項(xiàng)選擇題It is good practice to use long towlines for ocean tows because the().

A.wear on the towline is equalized
B.weight of the towline increases the towing force
C.dip in the towline absorbs shock loads
D.danger of overriding is reduced

5.單項(xiàng)選擇題In order to pay out or slack a mooring line which is under strain,you should().

A.sluice the line
B.surge the line
C.stopper the line
D.slip the line