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

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

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 following items don’t belong to dock repair works?（）

Using a file without a handle may result in （）

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

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

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

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

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