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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

However fast or slow the combustion rate, it is still a （） between carbon, hydrogen, sulphur and oxygen that releases heat.

A.physical deformation
B.state exchange
C.chemical reaction
D.coalescence

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The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the （）.This has the advantage of saving weight.

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