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引起柴油机气阀的阀面和阀座烧损可能性有()。Ⅰ.阀座扭曲漏气Ⅱ.冷却不良Ⅲ.阀座偏移倾斜Ⅳ.阀与阀座失圆Ⅴ.阀杆卡阻Ⅵ.
问题
引起柴油机气阀的阀面和阀座烧损可能性有()。Ⅰ.阀座扭曲漏气Ⅱ.冷却不良Ⅲ.阀座偏移倾斜Ⅳ.阀与阀座失圆Ⅴ.阀杆卡阻Ⅵ.阀和阀座有麻点
A.Ⅰ+Ⅲ+Ⅳ
B.Ⅱ+Ⅳ+Ⅵ
C.Ⅰ+Ⅱ+Ⅳ
D.以上全部
参考答案
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