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

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

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

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

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

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

To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）

（） is not installed on the main switchboar.

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

During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.