“星空极速”客户端分了哪些区？（）A、服务统计区 B、服务切换区 C、上网帐号管理区

在C(s)＋CO₂(g)2CO(g)反应中可使反应速率增大的措施是　(     )

①缩小容器的体积；②增加碳的量；③通入CO₂；④恒压下充入N₂ ；⑤恒容下充入N₂；⑥通入CO

A．①③⑤　　

B．②④⑥

C．①③⑥　　

D．③⑤⑥

真正高明的伪造家制造的钞票从不会被发现，所以一旦他的作品被认出是伪造的，则伪造者不是位高明的伪造者，真正的伪造家从不会被抓到。下列哪种推理方式与这段话类似( )

A．小张是一个玩魔术的专家，他的魔术总能掩人耳目，从未被揭穿，所以他是一个高明的魔术师

B．小张是一个玩魔术的人，他的魔术一般不会被揭穿，偶尔有一两次被人揭穿，但这不妨碍他是一名优秀的魔术师

C．小张是一个玩魔术的人，他的魔术一般不会被人看穿，偶尔有一两次被人看穿，说明他并不是一个高明的魔术师，因为高明的魔术师不会被人看穿

D．小张的魔术很好，从不会被揭穿，所以他是个优秀的魔术师

男性病人，63岁，心绞痛病史两年，一天前骑车上桥时又出现胸骨后压榨样疼痛，即原地休息，含服硝酸甘油三片无效，出冷汗，路人将病人送到急诊室。经心电图检查，诊断为急性前壁心肌梗死，转入CCU进行链激酶治疗

病人经链激酶治疗后好转，心梗后第三天食欲增加，该病人在饮食上应注意什么，你的回答是

A．禁食

B．按自己的需求进食

C．吃少量流质饮食，每天2次

D．少食多餐

E．多吃鸡蛋

最大可能的诊断是

A．骨纤维异样增殖症

B．内生软骨瘤

C．动脉瘤性骨囊肿

D．骨囊肿

E．骨巨细胞瘤

The TCP protocolis a （1）layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides of the globe. In other words, each connection creates a （2） witha length that may be totally different from another path created by another connection. This means that TCP cannot use the same retransmission time for all connections. Selecting a fixed retransnussion time for all connections can result in serious consequences. If the retransmission time does not allow enough time for a （3） to reach the destination and an acknowledgment to reach the source, it can result in retransmission of segments that are still on the way. Conversely, if the retransmission time is longer than necessary for a short path, it may result in delay for the application programs. Even for one single connection, the retransmission time should not be fixed. A connection may be able to send segments and receive （4） faster during nontraffic period than during congested periods. TCP uses the dynamic retransmission time, a transmission time is different for each connection and which may be changed during the same connection. Retransmission time can be made（5） by basing it on the round-trip time (RTT). Several formulas are used for this purpose.

（4）是（）

A.connections

B.requests

C.acknowledgments

D.datagrams