单项选择题
A.look B.give C.keep D.see
You （）use hooks when discharging bagged cargo.A.shouldB...
单项选择题You （）use hooks when discharging bagged cargo.
A.should B.shouldn’t C.must D.can
A little （）may cause great damage or loss.A.careB.carel...
单项选择题A little （）may cause great damage or loss.
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
