氯水洗涤塔液位控制指(),液位过高会造成()。氯气总管压力波动,液位高低主要通过调节氯水泵出口总管上去电解工段的氯水截止阀开度实现。
参考答案:小于2米;氯气进塔管道堵塞
“卢沟桥,卢沟桥,男儿坟墓在此桥!最后关头已临到,牺牲到底不屈挠……首悲壮的抗日歌曲有关的事变是()
A.九一八事变
B.双十二事变
C.七七事变
D.八一三事变
All of the following works are known as Hardy’s "novels of character and environment" EXCEPT ().
A. The Return of the Native
B. Tess of the D’ Urbervilles
C. Jude the Obscure
D. Far from the Madding Crowd