题目内容

肼屈嗪引起心率加快的原因是

A. 降低血压，反射性兴奋交感神经
B. 异位节律点自律性增高
C. 直接提高窦房结的自律性
D. 阻断突触前膜α受体，递质释放增多
E. 阻断副交感神经节

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内湿与哪脏功能失常关系密切()

A．SMTPB．IPC．EDIFACTD．HDLCE．ARP

A. SMTP
B. IP
C. EDIFACT
D. HDLC
E. ARP

标准离差率是一个相对指标，可以用来比较预期收益率不同的资产之间的风险大小。 ()

A. 正确
B. 错误

An expert system is a software that(41)specialist knowledge-about a particular domain of(42)and is capable of making(43)decisions with in that domain. Although expert systems typically focus on a very narrow domain, they have achieved dramatic success with(44)problems, This has excited wide spread interest outside the research laboratories from which they emerged.Expert systems have given rise to a set of "knowledge engineering" methods constituting a new approach to design of high performance software system. This new approach represents an(45)change with revolutionary consequences.

A. develops
B. directory
C. effect
D. encapsulates
E. evolutionary