热机是通过燃料燃烧获得____ 能,把____ 能转化成____ 能的机器.
停表的示数如图所示,分别读出停表所示的时间为 ____s
﹣ It is reported that cancer can be controlled at a temperature lower than 100℃below zero.
﹣ Really? ______ nice surprise!