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

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

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

Engine parameters shall be corresponded to NOx Technical Files. This is required by （）

Using a file without a handle may result in （）

The ISPS Code consists of a mandatory section-Part A, which shows（）

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?（）

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

（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.