问题描述:
[单选]
The()is not properly set thus causing either advanced or retarded firing.
A.piston
B.fuel injection pump
C.crankshaft
D.oil ca
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答案解析:无
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答案解析:无
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上一篇:The()of the lubricant should be sufficient to hold the film together, but it should allow the lubricant to flow easily.
下一篇:The()of the main shaft should be measured with a().
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