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问题 单项选择题

快速心房纤颤患者，在用洋地黄治疗过程中，心率变慢而整齐，最好的处理是

A．停用洋地黄
B．阿托品
C．异丙肾上腺素
D．维拉帕米
E．胺碘酮

答案

参考答案：A

单项选择题

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
Open Shortest Path First(OSPF) is a (66) routing algorithm that (67) work done on the OSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing, requires (68) processing power. The Dijkstra algorithm is used to calculate (69) OSPF routing table updates only take place when necessary, (70) at regular intervals.

A．routes

B．road

C．distance

D．cost
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单项选择题

转筒式离心机处理加重钻井液可回收（）的重晶石。

A.62%一86%

B.82%以下

C.82%一96%

D.96%以上
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