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
The boat is stowed on the davit rather than on a cradle with which type of davit?（）
In ship construction，frame spacing is（）.
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
Centrifugal pumps have what advantage(s) over reciprocating pumps?（）.
The series of valves used to control the return flow in well control operations is called the（）.
On a ship，a door that is required to be marked KEEP CLOSED is designed to（）.
An integral part of a blowout preventer that serves as the closing element on an open hole，and whose ends do not fit around the drill pipe but seal against each other and shut off the space below completely is the（）.
Cargo pump relief valves are piped to the（）.
All electrical appliances aboard a vessel should be grounded to（）.
Limit switches are used on which davits?（）