TD-SCDMA系统的无线资源包括频率、时隙、码字、功率和位置。
参考答案：错
______ buildings had been ______ after the earthquakes.
A．A large number of; in ruins
B．The great number of; in ruins
C．A great number of; in ruin
D．The good number of; in ruin
写出三个你知道名字的四边形分别是______、______、______．
