If separating effect is not good, which measure should be taken （）

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）

Cold weather starting of a diesel engine may be made easier by（）

（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）