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【单选题】
As soon as he had the light, the baby changed back into Raven.A.
Immediately after he had the light, the baby changed back into Raven.
B.
The baby stopped crying as soon as he got the light and turned back into Raven using magic.
C.
The baby turned back into Raven immediately after he got the light.
D.
The baby changed back into Raven as soon as he had the light, which surprised everyone.
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举一反三
【单选题】x05a02046在间壁换热器中,当两流体均变温时,采用折流的目的是___________ 。
A.
提高K
B.
提高 tm
C.
增加传热面积A
D.
使K和A均增加
【多选题】再生硅胶的注意事项是什么，正确的是（）
A.
排尽氮气中所带有的水分
B.
保护气部分断开的阀门必须关严，安全阀处于正常工作状态
C.
置换合格后，电加热器应先送电，后送气
D.
置换后O 2 含量一定小于0.5%
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