單項(xiàng)選擇題

In admiralty sailing directions, stripes is the word used to indicate（）marking.

A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal

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單項(xiàng)選擇題

In anchoring orders, up and down means（）.

A.the chain is not upright
B.the chain is tight
C.the chain is upright
D.the chain is slack

單項(xiàng)選擇題

In anchoring orders, walk back the chain means（）.

A.pay away the chain
B.take in the chain
C.check up the chain
D.take a strain on the chain