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问题 单项选择题

个体户发生的与生产经营有关的业务招待费，由其提供合法凭据，经主管税务机关审核后，在其收入总额的( )以内据实扣除。

A．2‰

B．3‰

C．5‰

D．10‰

答案

参考答案：C

选择题

罗丹酚酸是一种从植物中提取的天然药物，具有很强的抗氧化性，能延缓人体衰老，是制造医药和化妆品的良好原料。该有机物是一种易溶于水的化合物，其结构如图所示。则下列叙述中不正确的是

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A. 1 mol罗丹酚酸在O2中完全燃烧消耗19 mol O2

B. 罗丹酚酸既可与FeCl3溶液发生显色反应，也可以发生水解反应和酯化反应

C. 1 mol罗丹酚酸最多可与7 mol H2发生加成反应

D.1 mol罗丹酚酸与足量NaOH溶液反应，最多消耗6 mol NaOH

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单项选择题

NAC，s rNetwork Access Control)role is to restrict network access to only compliant endpoints and (71) users．However，NAC is not a complete LAN (72) solution；additional proactive and (73) security measures must be implemented．Nevis is the first and only comprehensive LAN security solution thatcombines deeD security processing of every packet at 10Gbps，ensuring a high level of security plus applicationavailability and Derformance．Nevis integrates NAC as the first line of LAN security (74) ．In addition toNAC．enterFIrises need to implement role．based network access control as critical proactive security measuresreal．time，multilevel (75) inspection and microsecond threat containment

A．port
B．connection
C．threat
D．insurance
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