正确答案: D

Ⅱ＋Ⅲ＋Ⅴ

题目：针阀偶件锥面配合面密封的要求是（）。Ⅰ.形成面接触；Ⅱ.形成线接触；Ⅲ.密封带宽度为0.3～0.5mm；Ⅳ.密封带宽度为0.1～0.3mm；Ⅴ.针阀锥角大于针阀体锥角0.5°～1°。

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学习资料的答案和解析：

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外圆面/内圆面

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涡轮/温度高

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fresh water

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the flange

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shim

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Pressure lubrication

[单选题]An increase in the air inlet manifold pressure of a diesel engine will result in a/an （）.

decrease in fuel consumption per horsepower-hour