单项选择题
A （）can give power to hoist or lower the cargo.
A. crane
B. life winch
C. derrick
D. cargo winch
点击查看答案&解析
相关考题
-
单项选择题
Excuse me, may I （）your file?
A.do
B.get
C.lend
D.borrow -
单项选择题
All the cargo wires must be greased （）.
A.well
B.good
C.nice
D.perfect -
单项选择题
I’ll thin down the（）for you right now.
A.hammer
B.pulley
C.paint
D.bridge
