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【单选题】
关于应用代理网关防火墙的说法，正确的是 ( )。A.
基于软件的应用代理网关工作在OSI网络参考模型的会话层上，它采用应用协议代理服务的工作方式实施安全策略。
B.
一种服务需要一种代理模块，扩展服务较难。
C.
和包过滤防火墙相比，应用代理网关防火墙的处理速度更快。
D.
不支持对用户身份进行高级认证机制。一般只能依据包头信息，因此很容易收到“地址欺骗型”攻击。
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反馈参考答案：
举一反三
【单选题】He didn't want to go to the cinema but they begged so hard that he ______ and went with them.
A.
gave off
B.
gave out
C.
gave in
D.
gave up
【简答题】酸沉降是指大气中的酸通过降水(如雨、雾、雪)迁移到地表,
【单选题】The doctor suggested that the patient _____ on a diet but he couldn't resist the temptation of rich food .
A.
goes
B.
go
C.
went
D.
gone
【简答题】A．He likes to go with her. B．He has no time. C．He doesn't feel welt. D．He doesn't like the evening party.
【简答题】食品调味剂分为哪几大类
【单选题】refers to t he pathological process that results in the formation and growth of a tumor.
A.
hyperplasia
B.
neoplasia
C.
hypoplasia
D.
displasia
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