空调就是对空气进行处理，即夏季进行冷却除湿冬季进行（）以及过滤，净化空气等。
参考答案：加热加湿
The result was good enough for Liu Xiang to win the _____, but far off his former world record and
personal best of 12.88 seconds. [ ]
A. power
B. advantage
C. title
D. item
反应容器容积大小的选择依据是什么？
