MPG-900惰气发生装置压力/真空破坏器开起真空度为()。
A、-500mmH2O
B、-600mmH2O
C、-700mmH2O
D、-800mmH2O
参考答案:C
--- Can I call for some friends and spend the day outside with them, Mom?
--- ____ I’ve told you to have a weekend on your own.
A.Why so?
B.Why not?
C.How come?
D.So what?
《300MW汽轮机运行导则》要求,新安装机组调速系统迟缓率应不大于0.2%。