單項選擇題

That is the （）(易燃的) cargo.

A.flammable
B.dangerous
C.explosive
D.fragile

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單項選擇題

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

單項選擇題

Please adjust the derrick （）(向上).

A.upwards
B.downwards
C.forwards
D.backwards