若组成为zi的物系,∑Kizi<1时其相态为()。
参考答案:过冷液体
It is reported that the Underground Line No. 1 _____ in our city in 2015.
A. will finish B. has been finished C. will be finished
一般用于洗衣房、开水间、浴室等用水设备上的水龙头为()。
A.胶带龙头
B.旋塞式配水龙头
C.球形阀式配水龙头
D.盆浴水龙头