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.

The treatment of the fuel oils involves storage, heating, filtering and（）

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

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.

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

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

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

Using a file without a handle may result in （）