单项选择题X 纠错

A.second stage feed heater
B.saltwater feed heater
C.distillate cooler
D.second stage vapor separator

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A.deaerate the first effect distillate
B.filter the condensed flash vapors
C.deaerate the first and second effect distillate
D.remove small water droplets entrained in the flashed vapor

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A.vacuum drag from the auxiliary condensate system
B.individual vacuum pumps
C.a single non-condensing air ejector
D.a two stage air ejector

单项选择题

A.vaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamber
B.vaporize, with the un-flashed eater equalizing to the saturation conditions existing in the f lash chamber
C.vaporize, with the remaining water a t a temperature greater than it entered the flash chamber
D.boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber

单项选择题

A.combined as part of the salt water feed heater
B.the open area above the brine levels in the first and second stages
C.combined as part of the distillate cooler
D.another term used to describe the vapor feed heater

单项选择题

A.higher than the first stage feed-water temperature and absolute shell pressure
B.lower than the first stage feed-water temperature and absolute shell pressure
C.the same as the first stage feed-water temperature and absolute shell pressure
D.not related to the feed-water temperature and absolute shell pressure

单项选择题

A.lowering brine discharge density
B.decreasing the absolute pressure of each stage
C.increasing the saltwater feed heater temperature
D.increasing the pressure at the spray pipe

单项选择题

A.clearance between the top of the valve stem and the rocker arm
B.compression of the valve springs
C.clearance between the valve seat inserts and the head
D.out of roundness of the fuel injection cams

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