A.central air conditioning system
B.high velocity system
C.low velocity system
D.single duct system
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A.central air condition system
B.high velocity system
C.low velocity system
D.single duct system
A.mechanical energy
B.heat energy
C.potential energy
D.kinetic head
A.backwards
B.forwards
C.upward
D.downwards
A.air chamber
B.head lank
C.primer
D.prime mover
A.eye
B.hole
C.balance holes
D.opening
最新試題
Diesel engine air start system check valves are opened by （）
To proceed to the assistance of a ship in distress is（）
Cold weather starting of a diesel engine may be made easier by（）
If separating effect is not good, which measure should be taken （）
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.
The ISPS Code consists of a mandatory section-Part A, which shows（）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
Under MARPOL Code the ship to which it applies has to carry （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.