提高电力系统安全性的控制只有一类,是系统稳定运行时安全裕度不够,为防止出现紧急状态而采取的预防性控制。
参考答案:错
分馏法原油稳定装置中,当()长时间液位过高,易造成淹塔事故。
A.三相分离器
B.轻烃罐
C.原油缓冲罐
D.稳定塔
George Bernard Shaw's play Mrs. Warren's Profession is about ______.
A. slum landlordism B. the economic oppression of womenC. the political corruption in England D. the religious corruption in England