题目内容

关于正常人QRS波群的阐述,下列哪—项不正确

A. QRS波群代表整个心室肌除极的电位变化
B. 时间在0.06—0.10秒
C. V1、V2多呈rS型,V1R波不超过1.0mV
D. V5、V6多呈qqRs、Rs或R型,V5R波不超过2.5mV
E. V1的R/S<1,也可以>1; V5的R/S>1,也可以<1;

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关于T波的阐述,下列哪—项不正确

A. T波代表心室复极时电位的变化
B. 正常时,T波方向与同导联QRS波群主波的方向一致。
C. I、Ⅱ、V4~V6导联T波向上,Ⅲ、aVL、aVF、V1~V3可向上、双向或向下,aVRT波则向下﹐
D. 若V1T波向上,则V2~V6T波就不应向下
E. V5~V6 T波电压<于同导联R波的1/10高度

下列那些符合正常QRS波群的波形特点

A. V1~V2导联主波向下,V4~V6导联主波向上
B. V1~V6导联R波逐渐减低,S波逐渐升高
C. aVR导联主波向下; aVL、aVF导联主波可以向上,也可以向下
D. I、Ⅱ、Ⅲ导联在没有电轴偏移的情况下,主波方向一般向上
E. V3导联一般正、负波相等

选择正确的短语填空:feel surprised, transportation tools, as long as,traffic rule, proud of1. ___________ good rules could regulate the production and use of them, we can enjoy more interesting ways of transportation.

选择正确的短语填空:feel surprised, transportation tools, as long as,traffic rule, proud of2. So, if you send your selfies in five different countries in three days, don't expect anyone in your friend circle to __________.

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