题目内容

6.The college campus enjoys the ______________ of being the most beautiful in the city.7.Women who exercise regularly, especially in _____________ activities, typically lose iron.8.Each winner received a ___________ cash prize plus a laptop.9.This official came to ___________ for being fair and honest in office.10.Needless to say, his habit of talking loudly at night doesn’t _________ him to his roommates.

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移动通信可利用的频谱资源( )

A. 有限
B. 无限
C. 不能确定
D. 可以再生

我国目前有四大运营商,其中,TD-SCDMA是由()在运营。

A.中国移动
B.中国联通
C.中国电信
D.中国广电

()是由于在电波传播路径上受到建筑物及山丘等的阻挡所产生的阴影效应而产生的损耗。

A.码间干扰
B.多址干扰
C.慢衰落
D.快衰落

3G移动通信系统中,采用的多址通信方式为( )。

A. TDMA
B. CDMA
C. SDMA
D. FDMA

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