相关考题
-
单项选择题
You （）use hooks when discharging bagged cargo.
A.should
B.shouldn’t
C.must
D.can -
单项选择题
A little （）may cause great damage or loss.
A.care
B.careless
C.carelessness
D.careful -
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
