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

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

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

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）

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

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

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

Diesel engine air start system check valves are opened by （）

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

Using a file without a handle may result in （）