When the system upon which a transport entity is running fai

【名词&注释】

法律责任、幼儿园(kindergarten)、冷凝器(condenser)、低密度(low density)、非典型(atypical)、回流阀(return valve)、性疾病(diseases)、关闭系统、受影响、重新开始(restart)

[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.

A. B

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学习资料：

[多选题]法律责任的种类包括（）。

A. 刑事法律责任
B. 民事法律责任
C. 行政法律责任
D. 违宪法律责任

[单选题]下列不属于非典型脑脓肿CT表现特征的是（）

A. A.平扫只显示低密度，未显示等密度脓肿壁B.脓肿壁强化不连续C.部分呈环状强化，部分呈片状强化D.多环重叠，或分房状强化E.包膜显示完整、光滑、均匀、薄壁之特点

[多选题]患儿，男性，8岁，要求矫治“地包天”。无全身性疾病^(diseases)治疗史。幼儿园时曾有牙痛史但未作治疗。有长期吮咬上唇习惯，有奶瓶喂养史。替牙列，上下第一磨牙萌出，上下前牙已替换，前牙反，凹面型，下颌第二乳磨牙残根。

A. A, B, C, D

[单选题]在同一小接地电流系统中，所有出线均装设两根不完全星形接线的电流保护，但电流互感器不装在同名两相上，这样在发生不同线路两点接地短路时，两回线路保护均不动作的几率为（）。

A. 1/3
B. 1/6
C. 1/2
D. 1

[单选题]氨制冷压缩机收氨时应关闭系统的（）、机体冷却阀、冷凝器回流阀。

A. 入口阀
B. 出口阀
C. 补氨阀
D. 加油阀

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