（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.

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

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

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

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

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

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

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

Using a file without a handle may result in （）

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