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

Engine parameters shall be corresponded to NOx Technical Files. This is required by （）

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

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

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

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

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

Using a file without a handle may result in （）

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

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