7.離心泵排出壓力升高，可能會導致下列何種現象？ (A)驅動馬達超速 (B)軸承負荷降低 (C)流體流量降低 (D)流體流量增大

7.離心泵排出壓力升高，可能會導致下列何種現象？
(A)驅動馬達超速
(B)軸承負荷降低
(C)流體流量降低
(D)流體流量增大

答案：登入後查看
統計： A(23), B(3), C(138), D(89), E(0) #577769

詳解 (共 1 筆)

鸚眼（繼續考）

B1 · 2019/02/26

#3216348

排出閥關小(壓力升高)功率減小揚程提高...

(共 28 字，隱藏中）

前往觀看

17.The products of combustion of marine fuels include sulfur dioxide, which, when combined with water vapor, forms acids such as the sulfurous acid and sulfuric acid. These acids cause cold- end corrosion if allowed to condense on boiler components of flue gas ducting. Therefore, in order to prevent the cold-end corrosion, which action is not to be taken? (A)To ensure the temperature of exhaust gas is always above the condensation temperature level. (B)To install more heat exchangers in the flue gas ducting so that the temperature of exhaust gas is further reduced. (C)To prevent any chemical process that formulates the acid within the boiler components of flue gas ducting. (D)To ensure there is no water-vapor condensate formed within the flue gas by controlling the flow temperatures in the flue-gas ducting.

7.離心泵排出壓力升高，可能會導致下列何種現象？
(A)驅動馬達超速
(B)軸承負荷降低
(C)流體流量降低
(D)流體流量增大

詳解 (共 1 筆)

相關試題

相關試卷