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單項(xiàng)選擇題

The ship should reduce speed in the thick fog because of（）.

A.the poor visibility
B.the fog signals
C.the fast speed
D.the good sight

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單項(xiàng)選擇題

The ship touched the bottom（）the port side at 2000 hours.

A.on
B.at
C.in
D.to

單項(xiàng)選擇題

The ship’s draught forward is as same as her draught aft. This condition is named as（）.

A.even keel
B.even trim
C.even draught
D.even float