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

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

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

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）

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

The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

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

When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

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

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