对于室外AP或天线必须要求防雷，即在天线、馈线、网桥间必须加接避雷器，避雷器的接地电阻要求不大于（）。
参考答案：5
— Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow．
—________．You are welcome．
A．Yes, I do
B．Never mind
C．Yes, please
D．Not at all
下列情况可引起语音震颤增强，除了
A．大叶性肺炎
B．肺梗死
C．肺内大空腔
D．大量胸腔积液
E．肺脓肿
