民族风俗习惯是民族社会历史的产物。当社会发展变化时，民族风俗习惯（）。 也将立即发生变化。 将逐渐发生变化。 不会受社会变化的影响。 会成为最大的阻力。
Refer to the exhibit. The command spanning-tree guard root is configured on interface Gi0/0 on both switch S2 and S5. The global configuration command spanning-tree uplinkfast has been configured on both switch S2 and S5. The link between switch S4 and S5 fails. Will Host A be able to reach Host B？（） Yes. Traffic can pass either from switch S6 to S3 to S2 to S1， or， from switch S6 to S5 to S2 to S1。 No. Traffic will pass from switch S6 to S5 and dead-end at interface Gi 0/0。 No. Traffic will loop back and forth between switch S5 and S2。 Yes. Traffic will pass from switch S6 to S3 to S2 to S1。 No. Traffic will either pass from switch S6 to S5 and dead-end， or traffic will pass from switch S6 to S3 to S2 and dead-end。
已知水泥必须消耗量是41200t，损耗率是3%，那么水泥的净用量是（）t 39964。 42436。 40000。 43474。
轶事记录法
课件写作工具是为方便开发者和用户开展具体课件的一种软件包。它除了具有对各种多媒体素材进行综合加工、处理和编辑功能外，还具有播放演示的功能。它可以控制各种多媒体外设的工作。
HSE管理模式的HSE是指（）
