安注信号出现后,应监视和检查的自动动作有哪些?
参考答案:
1)反应堆紧急停堆;
2)应急柴油发电机组启动;
3)安注系统启动;
4)汽轮发电机组脱扣;
5)给水流量控制系统被隔离。
1. Nobody can e_________ (生存) without air or water.
2. The new hospital will be of great b_________ (好处) to the town.
3. She was a________(授予)a medal for bravery..
4. Marry was such a good teacher that she showed great p_________ (耐心) with her pupils.
5. Water had also appeared on other planets like Mars but, u__________ (不像) the earth, it had disappeared later.
统一是历史发展的主流。我国第一个统一的中央集权的封建国家是()
A.夏朝
B.商朝
C.秦朝
D.唐朝