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

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

Using a file without a handle may result in （）

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）

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

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）

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

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

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