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【单选题】
当传导神经上有占位性病变时，压迫可导致神经元放电同步性下降，从而使潜伏期延长，临床多见于（ ）潜伏期延长，波I~波V、波III~波V间期延长。
A.
波I
B.
波II
C.
波III
D.
波IV
E.
波V
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参考解析：
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举一反三
【单选题】In a purely biological sense, fear begins with the body’’s system for reacting to things that can harm us—the so-called fight-or-flight response. "An animal that can’’t detect danger can’’t stay alive...
A.
reactions of humans and animals to dangerous situations are often unpredictable
B.
memories of significant events enable people to control fear and distress
C.
people’’s unpleasant memories are derived from their feelings of fear
D.
the amygdala plays a vital part in human and animal responses to potential danger
【单选题】PR间期延长，P波后均有QRS波群，PR间期>0.20秒（）。
A.
第一度房室传导阻滞
B.
第二度Ⅰ型房室传导阻滞
C.
第二度Ⅱ型房室传导阻滞
D.
第三度房室传导阻滞
E.
高度房室传导阻滞