A.air
B.moisture
C.cooling water
D.lubricant
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A.drained off
B.collected
C.sent to the crankcases
D.separated with oil
A.rotary compressors
B.reciprocating compressors
C.centrifugal compressors
D.screw compressors
A.starting diesel engines
B.pneumatic control systems
C.pneumatic tools
D.supercharging air
A.globe valves
B.butterfly valves
C.gate valves
D.reducing valves
A.a sewage treatment plant
B.the extended aeration process
C.the liquor
D.the bubbling air
最新試題
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Which of the following items don’t belong to dock repair works?（）
The ISPS Code consists of a mandatory section-Part A, which shows（）
If separating effect is not good, which measure should be taken （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
The main purpose of port State control is not to（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The shipboard oil pollution emergency plan will be invalid after （）