A.that the fuel valve is open
B.if the air supply system is open
C.if the water sprinkler system is open
D.if the limit switch is on
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A.a defective ignition system
B.low lube oil level
C.weak valve springs
D.too heavy a load
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
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The extension of the after part of the keel in a single-screw vessel upon which the stern post rests is called the（）.
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