装置用循环水出界区温度为（）℃。
A.20
B.25
C.32
D.42
参考答案：D
—When did you get to know the professor over there?
—It was at the work shop we did reserch to gether two years ago.
A．that
B．there
C．which
D．where
A．熔化和汽化都吸热
B．熔化和汽化都放热
C．熔化吸热，汽化放热
D．熔化放热，汽化吸热
