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问题 单项选择题

2岁男孩，自幼喂养困难，曾患肺炎3次。查体：胸骨左缘3～4肋间Ⅲ级全收缩期杂音，传导广泛，有震颤，肺动脉瓣区第二心音亢进。患儿病理生理改变，哪项不符（）

A.左向右分流

B.肺动脉高压

C.体循环血量减少

D.左心室负荷减少

E.肺血增多

答案

参考答案：D

单项选择题 B型题

出自我国古医书《古今医统》的内容是（）。

A."启我爱医术，复爱世间人，愿绝名利心，尽力为病人。"

B."医本活人，学之不精，反为夭折。"

C."先知儒理，然后方知医理……。"

D."我愿尽余之能力及判断力所及，遵守为病家谋利益之信条。"

E."留神医药，精通方术……以善其生。"
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单项选择题

In (66) the strength of the carrier signal is varied to represent binary 1 or 0. (67) is a system that can map a name to an address and conversely an address to al name. (68) is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol. (69) is an approach that enables an ATM switch to behave like a LAN switch. (70) is an guided media which is made of glass or plastic and transmits signals in the form of light.

A．ASK

B．PSK

C．FSK

D．FDM
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