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單項(xiàng)選擇題

To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.

A.weight of cable to weight of vessel
B.weight of cable to weight of anchor
C.length of anchor to depth of water
D.length of cable to depth of water

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單項(xiàng)選擇題

Three SHORT BLASTS mean（）.

A.I am altering my course to starboard
B.I am altering my course to port
C.I am operating astern propulsion
D.I am operating ahead propulsion

單項(xiàng)選擇題

The winch is liable（）worn-out in this way.

A.getting
B.to get
C.to have got
D.for getting