简述用槽筒摩擦传动时的防叠措施。

[单选题]When the system upon which a transport entity is running fails and subsequently restarts,the(21) information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.The still active side of a half-open connections can close the connection using a(22)timer. This timer measures the time the transport machine will continue to await an (23) of a transmitted segment after the segment has been retransmitted the maximum number of times.When the timer (24),the transport entity assumes that either the other transport entity or the intervening network has failed. As a result, the timer closes the connection, and signals an abnormal close to the TS user. In the event that a transport entity fails and quickly restarts, half-open connections can be terminated more quickly by the use of the RST segment, the failed side returns an RST i to every segment i that it receives. When the RST i reaches the other side, it must be checked for validity based on the (25) number i, as the RST could be in response to an old segment. If the reset is valid, the transport entity performs an abnormal termination. 空白处（24）应选择（）

[判断题]领导决策一般由决策者、决策目标、决策备选方案、决策环境和决策后果五个要素组成。

[填空题]对产业区位选择产生影响的社会经济因素有（）、（）、市场和运输。

[单选题]某患儿11岁，一月来上前牙牙龈时常流脓。查远中舌面深龋，探无反应，无穿髓孔，松Ⅰ度，叩痛（+），冷热测无反应，唇侧牙龈近根尖处有一窦道口为确定诊断，临床需做的检查是（）

[问答题]何谓坏病？其治疗原则是什么？（即辩证的治疗原则）

[多选题]设立保险专业代理公司，应当具备下列哪些条件（）。

[单选题]在正常运行中心ATS工作时，车站级ATS计算机（列车排路计算机TRC和时刻表处理器TTP）处于（）状态。

[单选题]《建设工程施工合同示范文本》中发包人的义务是（）

[单选题]设两组电压互感器的作用是（）

[单选题]在保险承保环节中，签单员缮制保险单的同时，还要开具一种“通知书”与保单的正、副本一起送复核员复核。该“通知书”是（　）。

[问答题]简述用槽筒摩擦传动时的防叠措施。

[判断题]摩擦压砖机是通过摩擦轮的摩擦传动来压制耐火砖的机械。

[多选题]下面哪些是摩擦传动（）。

[问答题]什么是摩擦传动？

[问答题]什么叫摩擦传动？

[多选题]下列属于摩擦传动的是（）。

[单选题]摩擦轮传动一般不（）。

[判断题]V带传动属于摩擦传动。

[判断题]V带传动属于摩擦型传动。

[判断题]带传动属于摩擦传动。