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

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）

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

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

（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

Flame failure in an automatically fired auxiliary boiler can from a/an （）

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

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

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