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 （）

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

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

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 （）

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

The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

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 diesel engine components listed increase air density and helps to improve engine operating efficiency?（）