Using a file without a handle may result in （）

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

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

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

If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）

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.

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

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

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）

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