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
最新試題
In ship operations，hoisting and lowering pipe in and out of the drilled hole is the main function of the（）.
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（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
The series of valves used to control the return flow in well control operations is called the（）.
The bypass valve on a self-contained breathing device should be opened if（）.
Limit switches are used on which davits?（）
As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.
An LWT anchor often has difficulty tripping in（）.
In ship construction，keel scantlings should be the greatest（）.
The C02 flooding system is actuated by a sequence of steps which are（）.