单项选择题
A.flammable B.dangerous C.fragile D.poisonous
That is the （）(易燃的) cargo.A.flammableB.dangerousC.expl...
单项选择题That is the （）(易燃的) cargo.
A.flammable B.dangerous C.explosive D.fragile
The （）(浮吊) can float on water used to load and unload t...
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
Please adjust the derrick （）(向上).A.upwardsB.downwardsC....
单项选择题Please adjust the derrick （）(向上).
A.upwards B.downwards C.forwards D.backwards
