A.the “ nip ”is zero
B.the “ nap ” is zero
C.the “ gap ”is correct
D.the “ clearance ” is correct
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A.a closed loop control system
B.an open loop control system
C.a boiler control system
D.a steering gear
A.sliding bowl bottom
B.gravity disc
C.bowl
D.liquid level detector
A.sliding bowl bottom
B.gravity disc
C.separating disc
D.scum valve
A.turbine
B.screw
C.vaneejector
D.centrifugal
A.leaky pipe
B.opened inlet valve
C.too much water in tank
D.None of the above
最新試題
To proceed to the assistance of a ship in distress is（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
The condensers located in various stages of a flash evaporator are cooled by（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
If separating effect is not good, which measure should be taken （）
（） is not installed on the main switchboar.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
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.