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

During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.

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

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）

The ISPS Code consists of a mandatory section-Part A, which shows（）

（） is not installed on the main switchboar.

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

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

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

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