单项选择题X 纠错
A. smell B. dry powder C. chemical D. odorous
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A.odorous B.powder C.chemical D.noxious
A. bagged cargo B. drummed cargo C. cased cargo D. deck cargo
A.corrosive B.poisonous C.explosive D.flammable
A.corrosive B.poisonous C.explosive D.dangerous
A.flammable B.dangerous C.fragile D.poisonous
A.flammable B.dangerous C.explosive D.fragile
A. floating crane B. jumbo boom C. union purchase D. crane
A.upwards B.downwards C.forwards D.backwards
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