單項(xiàng)選擇題

An acceptable means of tightening connecting rod and main bearing cap bolts is to measure the （）
Ⅰ.torque applied to each nut and bolt assembly
Ⅱstretch of each nut before and after tightening

A.Ⅰonly
B.Ⅱ only
C.both Ⅰ and Ⅱ
D.neither Ⅰ nor Ⅱ

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單項(xiàng)選擇題

Forcing the exhaust gases form the cylinder of an operating diesel engine with the aid of a blower is known as （）

A.scavenging
B.forced draft
C.turbo-charging
D.aspiration

單項(xiàng)選擇題

In a four-stroke/cycle diesel engine, badly worn intake valve guides can cause excessive（）.

A.exhaust pressure
B.exhaust temperatures
C.cooling water temperatures
D.lube oil consumption