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單項(xiàng)選擇題

Get the searchlight（）for transiting the cancal at night.

A.turned off
B.already
C.almost
D.ready

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單項(xiàng)選擇題

GM cannot be used as an indicator of stability at all angles of inclination because（）.

A.M is not fixed at large angle
B.there is no M at large angles
C.G is not fixed at large angles
D.there is no G at large angles

單項(xiàng)選擇題

Good anchorage may be obtained anywany, generally mud and sand, in this water area. Vessel may have（）.

A.good towing ground
B.good holding ground
C.good grabbing ground
D.good dragging ground