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【单选题】
下列有传导阻滞的说法,错误的是:A.
右传导阻滞时不一定有广泛心肌损害
B.
不完全性右传导阻滞可见于正常人尤其是青年人
C.
QRS 时限〉0.12秒
D.
V5 、V6导联R波宽大，顶部有切迹或粗钝
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举一反三
【单选题】According to the result of the tests of the body's energy needs, physiologists concluded that _______.
A.
two meals a day is best to the elderly people
B.
three-meal pattern is suitable nutritionally to the average adult.
C.
children need more than three meals a day
D.
having snacks is very popular in America.