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按1-3-4-2顺序工作的发动机,当一缸压缩到上止点时,四缸活塞的位置是( )。

单选题
2021-07-17 23:47
A、进气行程起始位置
B、压缩行程起始位置
C、作功行程起始位置
D、排气行程起始位置
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正确答案
A

试题解析

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