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?（）

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

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

Which of the following items don’t belong to dock repair works?（）

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.

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

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（）

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）