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问题 问答题 简答题

简述LKJ的电源插件的主要性能参数。

答案

参考答案：

（1）除5V、±12V外所有输出回路彼此相互隔离。所有输出回路与输入回路隔离，隔离电压不小于1000VAC。

（2）输入回路具备过压抑制功能及过压/欠压保护

（3）输入欠压保护，可自恢复；

（4）输入过压保护，可自恢复；

单项选择题

二尖瓣开瓣音可出现于（）。

A.二尖瓣关闭不全

B.左心房黏液瘤

C.二尖瓣狭窄

D.缩窄性心包炎

E.二尖瓣脱垂
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单项选择题

After striking his head on a tree while falling from a ladder, a young man is admitted to the emergency department. He's unconscious and his pupils are nonreactive. Which intervention would be the most dangerous for the client

A．Give him a barbiturate.

B．Place him on mechanical ventilation.

C．Perform a lumbar puncture.

D．Elevate the head of his bed.
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