A.125 mm
B.183 mm
C.215 mm
D.It depends on outside pipe diameter
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A.canister-type gas mask
B.fresh-air breathing apparatus
C.self-contained breathing apparatus
D.combustible gas indicator
A.One man report the fire, and the other two men fight the fire
B.One man report the fire, one man fight the fire, and one man evacuate and secure the area
C.One man report the fire, one man fight the fire, and one man act as a safety observer
D.All three men fight the fire and report it immediately after it is extinguished
A.holding its slops onboard until they can be pumped into the city sewer system
B.circulating them through the lube oil purifier to remove water and debris
C.holding its slops onboard until they can be discharged to a shore side reception facility
D.pumping them into a settling tank for separation before pumping the oily water residue overboard
A.locate the fire
B.determine which type of fire is burning
C.sound the alarm
D.fight the fire
A.flame relief valve
B.flame stopper
C.safety valve
D.flame arrester
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()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Diesel engine air start system check valves are opened by ()
If two A.C.generators are to be operated in parallel, the load is distributed evenly by()
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()
The treatment of the fuel oils involves storage, heating, filtering and()
If separating effect is not good, which measure should be taken ()
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.
() is not installed on the main switchboar.