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

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

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

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

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

Cold weather starting of a diesel engine may be made easier by（）

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

If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）

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

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