Selective packet discard（SPD）operates in the following modes（）. ["normal","select","random","discard","full"]
学校体育在其具体实施过程中，主要通过（）等组织形式完成实现。 ["理论教学、实践教学、课外辅导及体育运动竞赛","体育讲座、课余体育训练、课外体育锻炼及体育运动竞赛","体育课、课余体育训练、社团体育活动及体育运动竞赛","体育课、课余体育训练、课外体育锻炼及体育运动竞赛"]
The Company LAN is becoming saturated with broadcasts and multicast traffic. What could you do to help a network with many multicasts and broadcasts？（） ["Creating smaller broadcast domains by implementing VLANs.","Separate nodes into different hubs.","Creating larger broadcast domains by implementing VLANs.","Separate nodes into different switches.","All of the above."]
广播员岗位防火责任制的内容是（） ["熟悉广播设备性能，遵守操作规程，严禁无关人员进入，离开广播室要关机切断电源，锁好门","将防火防爆安全宣传纳入广播作业过程，定时、定区段向旅客宣传列车防火安全知识和列车发生火灾后旅客应急自救知识","发生火灾时，按列车长的部署，及时广播，下达指令","负责车厢的火灾预防，管理好用火用电设备和消防器材"]
洁净室（区）的微生物监测包括（） ["空气微生物监测","表面微生物监测","人员监测","水的监测"]
标准的acl，作用在inbound方向有什么作用？
