A.a defective ignition system
B.low lube oil level
C.weak valve springs
D.too heavy a load
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A.once each crankshaft revolution
B.twice each crankshaft revolution
C.every other crankshaft revolution
D.every fourth stroke
A.They are less expensive
B.They are smaller for equivalent pumping ability
C.They pump more cargo in less time
D.All of the above
A.cargo pump pressure gauges
B.crossover lines interconnecting two pumps
C.suction side of pumps
D.atmosphere through pump vents
A.advance
B.cavitation
C.edging
D.slip
A.a not knowing
B.an unknowing
C.an unknown
D.a not known
最新試題
In relation to cargo gear，what does SWL mean?（）.
If the engine of a survival craft does not start，check to see（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
The portable radio apparatus means（）.
The bypass valve on a self-contained breathing device should be opened if（）.
Anchors are prevented from running out when secured by the（）.
In ship construction，frame spacing is（）.
As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.
Limit switches are used on which davits?（）
Cargo pump relief valves are piped to the（）.