A.closed discharge valve
B.broken pipe line
C.worn shaft
D.both A and B
您可能感興趣的試卷
你可能感興趣的試題
A.keyway
B.shaft
C.valve
D.casing
A.self priming
B.positive displacement
C.reciprocating
D.impeller
A.turbine
B.screw
C.vane
D.ejector
A.turbine
B.screw
C.vane
D.ejector
A.closed
B.opened fully
C.cracked open
D.partly open
最新試題
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()
Cold weather starting of a diesel engine may be made easier by()
()connectors hold best if a wire is accidentally pulled or a connection becomes loose.
If separating effect is not good, which measure should be taken ()
Under MARPOL Code the ship to which it applies has to carry ()
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()
The shipboard oil pollution emergency plan will be invalid after ()
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.