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（）

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

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

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

Engine parameters shall be corresponded to NOx Technical Files. This is required by （）

（） is not installed on the main switchboar.

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

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）

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

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