（） clearances in the main or crank pin bearings will somet

【名词&注释】

增压器(turbocharger)、可靠性。、动平衡试验(dynamic balance test)

[单选题]（） clearances in the main or crank pin bearings will sometimes be indicated by loss of pressure in the lubricating system before any bearing knock is heard.

A. Too larger
B. Too smaller
C. Excess
D. Excessive

查看答案&解析 查看所有试题

学习资料：

[单选题]贮备可以提高可靠性，它和其他提高可靠性方法的原则区别，在于可使系统的可靠性（）部件本身的可靠性。

A. 高于
B. 低于
C. 相当于
D. 等于

[单选题]防止增压器振动的措施包括（）。Ⅰ.定期换新轴承；Ⅱ.定期清洗叶片；Ⅲ.定期检查安装间隙；Ⅳ.转子定期检查磨损和变形；Ⅴ.转子定期作动平衡试验。

A. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ＋Ⅴ
B. Ⅱ＋Ⅲ＋Ⅳ＋Ⅴ
C. Ⅰ＋Ⅲ＋Ⅳ
D. Ⅲ＋Ⅳ＋Ⅴ

[单选题]All the rings are slightly rounded on their external top and bottom edges to keep the oil film on the cylinder liner during （） for new piston rings.

A. the running-in period
B. the running process
C. gas exchange process
D. the boiler firing

[单选题]Please draw out a 01 mm （） between the two halves of the bearing to reduce the clearance.

A. shim
B. gasket
C. washer
D. packing

[单选题]When to remove scale from the cooling spaces, acid solution （） in the system can be tested from time to time by putting some on to a piece of lime.

A. strength
B. dense
C. percentage
D. velocity

[单选题]High firing pressures and a low exhaust temperature in a diesel engine may result from （）.

A. decreased piston to cylinder head clearance
B. increased exhaust system back pressure
C. early fuel injection timing
D. low scavenge air temperature

[单选题]What condition will result in the automatic shutdown of a diesel engine? （）

A. High jacket water pressure
B. High lube oil pressure
C. Low lube oil pressure
D. Excessive turbo charger speed

本文链接：https://www.51bdks.net/show/9e75k6.html