正确答案: B

pulse

题目：In the （） pressure charging system the pulse of energy that occur as the exhaust is released from the cylinder to improve the output of the turbocharger.

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学习资料的答案和解析：

[单选题]柴油机吊缸时，不正确的做法是（）。

在拆卸下来的零件配合面上做好记号

[单选题]为了防止涡轮壳体电化学腐蚀，除用淡水冷却外，可以采用（）等方法。Ⅰ.壳体表面覆盖保护膜；Ⅱ.阴极保护；Ⅲ.阳极保护；Ⅳ.淡水中加防腐剂；Ⅴ.安装防腐锌块。

Ⅰ＋Ⅱ＋Ⅳ＋Ⅴ

[单选题]当铁梨木艉轴承的轴承间隙超过极限间隙，但铁梨木板条的厚度仍在要求范围以内时，可采用（）方法修理。Ⅰ.更换艉轴；Ⅱ.更换艉轴铜套；Ⅲ.在艉轴承下瓦下面垫入整张铜皮；Ⅳ.更换艉轴承衬套；Ⅴ.在艉轴承下瓦上面垫入整张铜皮。

Ⅱ＋Ⅲ

[单选题]For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an （）.

oil spray

[单选题]The PRIMARY function of a waste heat boiler is to （）

recover heat which otherwise would be lost

[单选题]Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?（）

Impurities

[单选题]If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.

leak in the primary cooling system