影响凝汽器端差增加的因素?
参考答案:
1、凝汽器水侧或汽侧结垢
2、汽侧漏入空气
3、冷却水管堵塞
4、冷却水量减少
5、机组负荷增加
6、冷却水进口温度降低。
A fool has gained nothing from the time _____, for he _____ nothing. [ ]
A. passing; has paid
B. passed; has been paid
C. passing; has been paid
D. passed; has paid
自治区“三个火线”用人导向指的是什么?