A.your work becoming rounded
B.injury to your hand
C.overheating of the file
D.pinning
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A.safe for becoming rounded
B.safe for hot work
C.not safe for personnel
D.not safe for hot work
A.checking the area for items that may catch fire
B.that a fire watch be posted
C.checking for the explosive gases
D.all of the above
A.Flash point improvers
B.Pour point improvers
C.Inhibitors
D.Foam suppressors
A.Low viscosity index
B.Low carbon forming tendencies
C.High film strength
D.High non-corrosive qualities
A.a high viscosity index
B.a low viscosity index
C.neutralize acids
D.resist oxidation at high temperatures
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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.
Using a file without a handle may result in （）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
（） is not installed on the main switchboar.
The treatment of the fuel oils involves storage, heating, filtering and（）
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 ISPS Code consists of a mandatory section-Part A, which shows（）
The cetane rating of diesel fuel is an indication of the （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.