（）的特点是设备便宜、带宽高，但传输距离有限，易受室内空气状态影响；它属于（请作答此题）传输媒介。
- A.具有高抗干扰性的有线
- B.具有高抗干扰性的无线
- C.抗干扰性较差的有线
- D.抗干扰性较差的无线
正确答案及解析
正确答案
解析
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- A.low-level
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