若空间隔离难度较大，室分需要在其它系统馈线处增加（）来实现隔离。
A.滤波器
B.合路器
C.双工器
D.分路器
参考答案：A
用方框内的单词完成下面的句子(共10分)（有多余选项）。
小题1:He__________gets up at six o'clock, seven days a week.
小题2:How__________ do you go to the movies?
小题3:It__________rains here. It's usually sunny and warm.
小题4:Some of my friends exercise every day and hardly ever eat junk food, but most of them eat junk food __________.
小题5:I can't swim. So I__________go to the beach to swim. Sometimes I go there with my friends to run.
一台计算机要连入Intemet，必须安装的硬件是（）。
A.调制解调器或网卡
B.网络操作系统
C.网络查询工具
D.WWW浏览器
