二回路给水加热系统包括哪些系统?
参考答案:
凝汽器,凝结水系统,低压加热系统(LCC、LBJ、LCS),主给水系统(LAA、LAB、LAC.和高压给水加热器系统。
煤气CO浓度超过()ppm不可以长期工作。
_____ the bad things he has done, we still believe in his essential goodness.
A.Instead of
B.Because of
C.In place of
D.In spite of