Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）

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

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

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

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

Under MARPOL Code the ship to which it applies has to carry （）

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

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

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