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

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

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?（）

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

Diesel engine air start system check valves are opened by （）

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

Flame failure in an automatically fired auxiliary boiler can from a/an （）

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

Using a file without a handle may result in （）