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

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

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

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

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

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

The main purpose of port State control is not to（）

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

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

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