The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）

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

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

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

The ISPS Code consists of a mandatory section-Part A, which shows（）

The shipboard oil pollution emergency plan will be invalid after （）

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

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

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