海船船员考试
单选题The heated feed-water entering any flash chamber of a flash-type evaporator will（）A vaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamberB vaporize, with the un-flashed eater equalizing to the saturation
题目
vaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamber
vaporize, with the un-flashed eater equalizing to the saturation conditions existing in the f lash chamber
vaporize, with the remaining water a t a temperature greater than it entered the flash chamber
boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
相似问题和答案
第1题：
A.viscosity a heated to reduce its
B.cooled to reduce its temperature
C.heated to reduce its density
D.heated to reduce its gravity
第2题：
The process during which liquid containing a reasonable amount of sensible heat at a particular pressure immediately changes into steam after admitted to a chamber at a lower pressure is called _____.
A.boiling off
B.flash evaporation
C.condensation
D.none of the above
第3题：
What specific jobs do securities outside dressing rooms do?
A.In addition to ensuring the life style of the performers, they should prevent any person from entry.
B.In addition to ensuring the life safety of the actors, they should stop any reporters from entering
C.In addition to ensuring the life safety of the performers, they should prevent any fans from entering
D.In addition to ensuring the life safety of the performers, they should prevent any unauthorized person from entering
第4题：
You just purchased a refurbished router that contains a configuration from a previous deployment. What should you do, before entering a new configuration into the router?（）
- A、RAM should be erased and the router restarted.
- B、Flash should be erased and the router restarted.
- C、NVRAM should be erased and the router restarted.
- D、The new configuration should be entered and saved.
正确答案:D
第5题：
The master of any vessel entering Singapore may ______ radio pratique to the Port Health Officer through his local agent．
A.apply to
B.apply for
C.apply with
D.apply in
第6题：
Which statement is NOT true?
A.While displacement pump works, volume of the working chamber will increase and decrease alternately
B.A gear pump always has two gears
C.Any vane pump will have a rotor within a ring
D.A balanced vane pump has two outlet ports and they are positioned symmetrically
第7题：
In a flash type evaporator, all saltwater heaters are vented through individual vent cocks to the ______.
A.saltwater heater shell
B.second-stage condenser
C.atmosphere
D.second-stage flash chamber
第8题：
dielectric heated drying
dielectricheateddrying：介电加热干燥,将湿物料置于高频电场内,由于高频电场的交变作用将物料中的湿分加热,气化而达到干燥的操作。
第9题：
The lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition is called ______．
A.Explosive range
B.Flash point
C.Ignition temperature
D.Combustion temperature
第10题：
greater distillate purity through high temperature evaporation
cold shocking for scale removal is not required
less internal corrosion because of lower brine density
less feed-water is required for equal plant capacity