Within IS-IS, the restart helper performs which task?（）

[单选题]19世纪中叶，西方列强打开亚洲国家大门主要方式是：（）

[单选题]小腹刺痛，小便不利，多属（）

[单选题]Passage1Today's adults grew up in schools designed to sort us into the various segments of our social and economic system. The amount of time available to learn was fixed: one year per grade. The amount learned by the end of that time was free to vary: some of us learned a great deal；some，very little. As we advanced through the grades，those who had learned a great deal in previous grades continued to build on those foundations. Those who had failed to master the early prerequisites within the allotted time failed to learn that which followed. After 12 or 13 years of cumulative treatment of this kind，we were，in effect，spread along an achievement continuum that was ultimately reflected in each student's rank in class upon graduation.From the very earliest grades, some students learned a great deal very quickly and consistently scored high on assessments. The emotional effect of this was to help them to see themselves as capable learners, and so these students became increasingly confident in school. That confidence gave them the inner emotional strength to take the risk of striving for more success because they believed that success was within their reach. Driven forward by this optimism, these students continued to try hard, and that effort continued to result in success for them. They became the academic and emotional winners. Notice that the trigger for their emotional strength and their learning success was their perception of their success on formal and informal assessments.But there were other students who didn't fare so well. They scored very low on tests, beginning in the earliest grades. The emotional effect was to cause them to question their own capabilities as learners. They began to lose confidence, which, in turn, deprived them of the emotional reserves needed to continue to take risks. As their motivation warned, of course, their performance plummeted. These students embarked on what they believed to be an irreversible slide toward inevitable failure and lost hope. Once again, the emotional trigger for their decision not to try was their perception of their performance on assessments.Consider the reality-indeed, the paradox-of the schools in which we were reared. If some students worked hard and learned a lot, that was a positive result, and they would finish high in the rank order. But if some students gave up in hopeless failure, that was an acceptable result, too, because they would occupy places very low in the rank order. Their achievement results fed into the implicit mission of schools: the greater the spread of achievement among students, the more it reinforced the rank order. This is why, if some students gave up and stopped trying (even dropped out of school), that was regarded as the student's problem, not the teacher's or the school's.Once again, please notice who is using test results to decide whether to strive for excellence or give up in hopelessness. The"data-based decision makers" in this process are students themselves.Students are deciding whether success is within or beyond reach, whether the learning is worth the required effort, and so whether to try or not. The critical emotions underpinning the decision making process include anxiety, fear of failure, uncertainty, and unwillingness to take risks-all triggered by students' perceptions of their own capabilities as reflected in assessment results.Some students responded to the demands of such environments by working hard and learning a great deal. Others controlled their anxiety by giving up and not caring. The result for them is exactly the opposite of the one society wants. Instead of leaving no child behind, these practices, in effect, drove down the achievement of at least as many students as they successfully elevated. And the evidence suggests that the downside victims are more frequently members of particular socioeconomic and ethnic minorities.Which of the following describes the paradox of the schools？

[单选题]GROS的中文含义是GPRS（）服务器。

[单选题]冻结排桩法是以含水地层（）为基坑的封水结构，以排桩及内支撑系统为抵抗水土压力的受力结构。

[单选题]企业根据市场需求制定了营销计划，生产系统为了按期交付出产成品，由此倒推产生了（）

[单选题]维修成本管理以设备一生管理为主线，遵循（）的管理理念。

[单选题]下列有关细胞转化试验的描述错误的是（）

[单选题]国家通过调节利率高低可以影响经济活动。一般认为，利息增加后带来的经济影响是（　　）。

[单选题]OSPF协议使用（）报文来承载LSA的信息。

[单选题]In IS-IS, how long will the restart helper keep the restarting router in the up ...

[单选题]Within IS-IS, the restart helper performs which task?（）

[单选题]In IS-IS， how long will the restart helper keep the restarting router in the up ...

[单选题]What is the function of the helper router during a restart event in OSPF?（）

[判断题]MPLS TE中，如果使用IS-IS作为IGP协议，IS-IS必须采用wide metric。

[单选题]具备IS-IS GR能力的路由器重启前，IS-IS发出的Hello报文中，关于RR bit和RA bit描述正确的是（）。

[单选题]Why does IS-IS use the SPF algorithm?（）

[多选题]Which two statements are correct regarding IS-IS？（）

[单选题]How often are IS-IS Hello packets transmitted?（）

[填空题]IP承载网AR配置IS-IS协议，设置overloadtime为（）s，缺省600s。