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

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

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

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

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

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

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

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

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（）

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）