相关考题
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单项选择题
That is the （）(易燃的) cargo.
A.flammable
B.dangerous
C.explosive
D.fragile -
单项选择题
The （）(浮吊) can float on water used to load and unload the cargo.
A. floating crane
B. jumbo boom
C. union purchase
D. crane -
单项选择题
Please adjust the derrick （）(向上).
A.upwards
B.downwards
C.forwards
D.backwards
