若反应器使用循环冷却水进行热量交换,装置突然停循环水,正确的处理方法是()
A.反应器停止进料
B.关闭进料阀
C.防止超温超压
D.可引入过滤水冷却
参考答案:A, B, C, D
I have always been honest and straight forward, and it doesn’t matter ____that I’m talking to.
A.who is it
B.who it is
C.it is who
D.it is whom
缺铁性贫血患病率最高的年龄段是()
A.0~6个月
B.6个月~2岁
C.3~5岁
D.6~9岁
E.10~16岁