A、completely filled with saltwater
B、filled with de-scaling compound
C、tightly closed to exclude air
D、vented to the atmosphere
更多“When a flash-type evaporator is to be secured for an extended period of time, the entire unit should be drained, cleaned, and （）.”相关的问题
A、fill the unit with saltwater B、fill the unit with de-scaling compound C、completely drain the unit D、tightly seal the unit to exclude air
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
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
A、A.vaporize, with the unflashed water remaining at the temperature at which it entered the flash chamber B、B.vaporize, with the unflashed water equalizing to the saturation conditions existing in the flash chamber C、C.vaporize, with the remaining water at the temperature greater than it entered the flash chamber D、D.boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
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
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