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

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）

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

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）

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

To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）

If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）

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

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

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