E-22为制冷剂冷凝器，为卧式管壳式换热器。
参考答案：对
=（）。
A．∞
B．
C．1
D．2
—Do you feel like going to the cinema tonight?
—Sorry, I ’ m so tired．I ____an early night．
A．have
B．am having
C．have had
D．had
=（）。