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

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

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

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

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

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

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）

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

Using a file without a handle may result in （）

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