您好,请知: packet-filter:访问控制列表的调用,可对IP、端口、协议进行过滤和匹配。 object-policy:对象策略,主要是添加IP、主机名、IP段等信息,为后续调用到安全策略提供匹配的条件。 security-policy ip :安全策略,通过指定源安全域、目的安全域、对象组、对象策略来进行过滤和匹配。 2021-04-16回答 评论(1) ...
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利用碳二亚胺类缩合剂缩合制备酰胺在药物合成中应用极为广泛,目前常用的缩合剂主要有三种:二环己基碳二亚胺(DCC)、二异丙基碳二亚胺(DIC)和1-(3-二甲胺基丙基)-3-乙基碳二亚胺(EDCI)。 使用该类的缩合剂一般需要加入酰化催化剂或活化剂,如4-N,N-二甲基吡啶(DMAP)、1...
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Wavelength-Switchable Fiber Laser Based on Mach-Zehnder Filter With LP11 Mode Output 2019 - Min Tang,Youchao Jiang,Qi Zhao,... - 《Photonics Technology Letters, IEEE》 - 被引量: 0 收藏相关文章 Strain and temperature characteristics of the LP 11 mode based on a few-mode fiber Bragg grating...
Within recirculating aquaculture systems(RAS),the bio-filter plays a critical role by removing dis-solved inorganic nitrogen,intercepting suspended matter,... WANG,Wei,QU,... - 《Journal of Fishery Sciences of China》 被引量: 6发表: 2012年 State of Rhode Island and Providence Plantations Small...
D. dirty fuel will clog the intake air filter 查看完整题目与答案 A major health hazard of the product tert-butylamine is that it(). A. can be absorbed through the skin B. causes irreversible damage to eye tissue C. is a very unstable product D. All of the above 查看完整题目...
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C. commnityfilter D. as-path-filter 查看完整题目与答案 以下意外伤害事件的处理{错误的是}( ) A. 发生意外事故,当事人应立刻向负责人、主管部门和院领导报告,并派人与家属联系 B. 病历、健康档案及护理记录是医疗及护理过程中最原始、客观、真实的材料,不允许亲属借阅复制病历 C. 为规避服务风险...