The condensers located in various stages of a flash evaporator are cooled by（）

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

Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）

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

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

The main purpose of port State control is not to（）

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

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

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

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