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單項(xiàng)選擇題

When a vessel is aground,（）.

A.she is underway
B.she is not underway
C.whether she is underway cannot be determined
D.she might be or not be underway

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單項(xiàng)選擇題

When did you check the contents of C0₂ cylinders（）.

A.by counting
B.by calculating
C.by weighing
D.by filling

單項(xiàng)選擇題

When does a pilot say make all lines fast ? He says it when（）.

A.the ship is very close to the pier
B.the ship is about to be in position
C.the ship is in position
D.the ship is getting alongside the pier

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