Air receivers installed in starting air systems are to be _______.
A.cylindrical in shape with service connections located at the top and bottom
B.opened and made available for inspection during biannual inspections provided
C.with automatic drain traps for the removal of moisture
D.so installed as to make the drain connections effective under extreme conditions of trim
第1题
A.proper fuel metering
B.complete fuel/air mixing
C.minimal fuel penetration
D.proper fuel timing
第2题
A.smoky exhaust
B.starting failure
C.ignition relay
D.over speed
第3题
A.two or more impellers housed together in one casing and mounted on a single shaft
B.a single stepped impeller mounted in a progressively staged casing
C.a large radial clearance between the impeller and casing to prevent overheating due to
D.an increase in the discharge velocity of the liquid with a corresponding decrease in pressure through the stages
第4题
A.bearing knocks
B.dropping of pressure of LO
C.noises
D.all the above
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