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

The treatment of the fuel oils involves storage, heating, filtering and（）

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

The cetane rating of diesel fuel is an indication of the （）

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）

（） is not installed on the main switchboar.

（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

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

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

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