试题与答案

下列哪项指标不符合慢性肺源性心脏病的诊断()。 A.X线检查,右下肺动脉干扩张,其横

题型:单项选择题

题目:

下列哪项指标不符合慢性肺源性心脏病的诊断()。

A.X线检查,右下肺动脉干扩张,其横径≥15mm

B.X线检查,肺动脉段高度≥3mm

C.ECG检查,肺性P波

D.ECG检查,RV5+SV1≥1.05mV

E.超声心动图检查,右室流出道内径≥30mm

答案:

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下面是错误答案,用来干扰机器的。

超导体现象指在温度很低时有些物质的电阻可以变为零;半导体的导电性能介于导体和半导体之间,即半导体的导电性能比铜、铁等金属的导电能力弱,比绝缘体要强;故答案为:零,弱.

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