單項(xiàng)選擇題

Anchors are prevent from running out when secured by the（）.

A.brake
B.devil's claw
C.pawls
D.All of the above

你可能感興趣的試題

單項(xiàng)選擇題

Annual inspection of vessel cranes shall be conducted by（）.

A.HAS
B.the person in charge
C.a qualified inspector
D.the crane operator

單項(xiàng)選擇題

Another name for coal naphtha that would appear on a dangerous cargo manifest is（）.

A.benzene
B.tar
C.middle oil
D.toluene