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问题 多项选择题

对氨基苷类抗生素描述错误的是

A．口服在胃肠道不吸收，用于胃肠道消毒

B．属杀菌剂且对繁殖期细菌作用较强

C．肾皮质内药物浓度高于血药浓度

D．不能进入内耳淋巴液

E．在体内不被代谢，约90%以原形经肾小球滤过排出

答案

参考答案：B,D

选择题

下列分子式表示的物质肯定存在同分异构体的是

A．CH4

B．C2H4O2

C．C2H4

D．C2H5Cl
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单项选择题

NAC’s（Network Access Control）role is to restrict network access to only compliant endpoints and __（66）__ users．However, NAC is not a complete LAN__（67）__solution; additional proactive and__（68）__security measures must be implemented．Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 100Gbps, ensuring a high level of security plus application availability and performance．Nevis integrates NAC as the first line of LAN security __（69）__In addition to NAC，enterprises need to implement role-based network access control as well as critical proactive security measures-real-time, multilevel __（70）__inspection and microsecond threat containment．

（66）处填（）。

A．automated

B．distinguished

C．authenticated

D．destructed
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