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

Using a file without a handle may result in （）

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

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

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

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

The shipboard oil pollution emergency plan will be invalid after （）

Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）

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

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