A.one to supply steam to the main propulsion turbine
B.an auxiliary boiler
C.A and B
D.neither A nor B
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A.fuel tank
B.bilge
C.atmosphere
D.auxiliary exhaust line
A.ensure feed water flow into the boiler
B.keep the steam drum pressure high
C.prevent water hammer in the feed line
D.help the feed water flash to steam
A.take no measures
B.extinguish the fire as soon as possible
C.feed water to the boiler
D.open the blow down valve
A.feed pump suction line
B.hot well
C.shell of the feed heater
D.feed lines to the boiler
A.rise when the steam pressure is increased
B.remain constant as long as the feed pump operates
C.fall when the steam pressure is decreased
D.vary as the steam demand changes
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最新試題
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will ().
The usual symptoms of cavitation in a centrifugal pump is ().
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Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by ().
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?()
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its ().
The control mode in which the final control element is moved from one of two flexed positions to the other is known as ().
If the head pressure of a reciprocating refrigeration compressor is excessive, ().
A grease gun is generally used to lubricate a ().
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