未消耗完的热量随工质一起排入大气中，这样可使燃气轮机的热力循环得以（）。
参考答案：闭合
因为3×6=18，所以3是18的因数．______．
Could you tell me_____?
A．where is the station
B．who is he
C．how I can get there
D．when does the train leave
