The cetane rating of diesel fuel is an indication of the （）

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

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

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

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

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

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

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

Using a file without a handle may result in （）

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