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單項(xiàng)選擇題

The fire of burning plastics is classified as （） fire.

A.Class A
B.Class B
C.Class C
D.Class D

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單項(xiàng)選擇題

The pistons are cooled by （） oil from the forced lubrication.

A.being given
B.giving
C.supplying
D.being supplied

單項(xiàng)選擇題

Engine parameters shall be corresponded to NOx Technical Files,This is required by（）

A.MARPOL Annex Ⅲ
B.MARPOL Annex Ⅵ
C.MARPOL Annex Ⅴ
D.MARPOL Annex Ⅳ

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