题目内容
(请给出正确答案)
提问人:网友renxueyu
发布时间:2022-01-06
[主观题]
The most important factor that causes the wear of the engine parts is _____.A.excessive he
The most important factor that causes the wear of the engine parts is _____.
A.excessive heat
B.friction
C.oxidation
D.high pressure
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