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问题 单项选择题

血小板聚集试验增高见于（）

A.尿毒症

B.肝硬化

C.骨髓增生异常综合征

D.急性白血病

E.口服避孕药

答案

参考答案：E

解析：血小板聚集试验增高反映血小板聚集功能增强，见于高凝状态和（或）血栓前状态和血栓性疾病。长期口服避孕药易导致高凝状态。

单项选择题

One of the most widely used routing protocols in IP networks is the Routing Information Protocol (RIP)．RIP is the canonical example of a routing protocol built on the (1) algorithm．Routing protocols in internet works differ slightly from the idealized graph model．In an internet work，the goal of the routers to forward (2) to various networks．

Routers running RIP send their advertisement about cost every (3) seconds．A router also sends an update message whenever an update from another router causes it to change its routing table．

Routing protocols use different techniques for assigning (4) to individual networks．Further, each routing protocol forms a metric aggregation in a different way．RIP takes the simplest approach，with all link costs being equal (5) ．Thus it always tries to find the minimum hop route．Valid distances are 1 through 15．This also limits RIP to runing on fairly small networks．

5（）

A．1

B．15

C．16

D．length of the link
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单项选择题

凹版印刷时印版滚筒的（）浸在墨槽中比较好。

A.1/4~1/3

B.1/5~1/4

C.1/6~1/5

D.1/4~1/2
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