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單項選擇題

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

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單項選擇題

I hereby request permission（）the ship’s main engine for routine maintenance.

A.immobilize
B.to immobilize
C.immobilization
D.immobilizing

單項選擇題

I haven’t seen the Harbor Officer（）.

A.yet
B.still
C.already
D.just now

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