The treatment of the fuel oils involves storage, heating, filtering and（）

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

Using a file without a handle may result in （）

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

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

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）

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

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.

To proceed to the assistance of a ship in distress is（）

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