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（）

To proceed to the assistance of a ship in distress is（）

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）

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

Using a file without a handle may result in （）

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

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

Which of the following items don’t belong to dock repair works?（）

During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.

When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish