单项选择题
A.care B.careless C.carelessness D.careful
Never operate hatch covers when the ship is（）.A. in por...
单项选择题Never operate hatch covers when the ship is（）.
A. in port B. anchoring C. rolling or pitching D. at sea
You are responsible for （）hatches today.A.closeB.toclos...
单项选择题You are responsible for （）hatches today.
A.close B.toclose C.closing D.closed
The ship may （）to one side seriously.A.pitchB.rollC.lis...
单项选择题The ship may （）to one side seriously.
A.pitch B.roll C.list D.upset
