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


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1.單項(xiàng)選擇題In order to maintain a safe speed at all times,any necessary alterations of speed must().

A.be instantly put on
B.be instant put into use
C.be instantly put into effect
D.be put immediately

2.單項(xiàng)選擇題In order to detect rot in manila lines,you should().

A.feel the surface of the line for broken fibers
B.measure the reduction in circumference of the line
C.observe any mildew on the outer surface
D.open the strands and examine the inner fibers

3.單項(xiàng)選擇題In heavy seas the helmsman should steer the survival craft().

A.into the seas
B.broadside to the seas
C.in the same direction as the seas
D.in a series of figure-eights

5.單項(xiàng)選擇題In determining the scope of anchor line to pay out when anchoring a small boat,one must consider the().

A.charted depth of water only
B.depth of water,including tidal differences
C.time and date of anchoring
D.type of anchor being used