單項(xiàng)選擇題One distinct advantage of flash type evaporators, as compared to most other evaporators, is that in a flash evaporator ().

A.high temperature distillate can be re- circulated to induce additional flashing
B.scale formation is not a severe problem
C.cold shocking is more effective in removing scale
D.water purity is greatly increased at high capacity


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題A liquid indicator sight glass is useful in determining whether or not a refrigeration system is sufficiently chargedIt is generally located in the().

A.high pressure liquid line
B.low pressure liquid line
C.high pressure vapor line
D.low pressure vapor line

2.單項(xiàng)選擇題Compared to a constant pitch propeller, a controllable pitch propeller().

A.more efficiently uses available engine power
B.operates at a lower efficiency at a fixed speed
C.produces the same torque at lower engine power
D.develops its rated power at a lower speed

3.單項(xiàng)選擇題Compared to a constant pitch propeller, a controllable pitch propeller().

A.more efficiently uses available engine power
B.operates at a lower efficiency at a fixed speed
C.produces the same torque at lower engine power
D.develops its rated power at a lower speed

4.單項(xiàng)選擇題Which of the following statements describes the functions of a reservoir used in a hydraulic system?()

A.Dissipate heat
B.Trap foreign matter
C.Separate air from the oil
D.All of the above

5.單項(xiàng)選擇題Which of the following statements describes the functions of a reservoir used in a hydraulic system?()

A.Dissipate heat
B.Trap foreign matter
C.Separate air from the oil
D.All of the above