中央空调的降温速度快吗?多长时间可以冷下来?
参考答案:
影响降温速度的因素有很多,如:基础温度、房屋隔热性、密闭性等。通常在20分钟内。
The teacher asked a difficult question, but Tom finally managed to___________a good answer.
A.put up with
B.keep up with
C.come up with
D.go through with
水生蔬菜的有何共同特性。