单项选择题
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
The （）(袋装货) can’t be unloaded by hooks.A. bagged cargoB...
单项选择题The （）(袋装货) can’t be unloaded by hooks.
A. bagged cargo B. drummed cargo C. cased cargo D. deck cargo
