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
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（）.
In relation to cargo gear，what does SWL mean?（）.
Anchors are prevented from running out when secured by the（）.
All electrical appliances aboard a vessel should be grounded to（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
The holding capability of an anchor is primarily determined by the（）.
Cargo pump relief valves are piped to the（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
In ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.
The purpose of a bilge well is to（）.