题目内容

多效蒸馏水器的特点有

A. 成本低、产量高
B. 压力越大,产水量越高
C. 效数越大,热能的利用率越高
D. 选用四效以上的蒸馏水器较合理
E. 性能取决于加热蒸气的压力和级数

查看答案
更多问题

在支路电流法分析中,用KCL列节点电流方程时,若电路中有N个结点,应列写的节点电流方程数为 ( )个。

A. 支路数
B. N-1
C. N
D. N+1

Lesson 3 课前小测complete the following transmissions based on the what you have previewed.PIL: Wuhan Control, GASDF, request time checkCTL: ______calling Wuhan Control, ______your callsign.PIL: GASDFCTL: ________, time is 0715 and a half.

CTL: CSN303, turn left heading 130 ________turn left heading 310

CTL: CCA102, Wuhan Approach, climb to and maintain FL310PIL: climb to and maintain FL130, CCA102CTL:_______, ________ i say again, climb and maintain FL310

答案查题题库