P-R间期正常值正确的是( )

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• 1P-R间期正常值正确的是( )
  
  A.P-R间期为0.12～0.20s
  B.P-R间期正确值与年龄无关
  C.P-R间期<0.10s为缩短
  D.P-R新时期>0.12s为延长
  E.P-R新时期是P波起点至QRS波终点
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• 2活化部分凝血活酶时间(APTT)测定缩短见于( )
  A.维生素K缺乏症
  B.严重肝病
  C.SLE
  D.妊娠高血压综合征
  E.DIC纤溶亢进期
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• 3常见于头皮、面部、背部而圆形的肿块与皮肤粘连，易感染，多为( )
  A.脂肪瘤
  B.纤维瘤
  C.皮样囊肿
  D.神经纤维瘤
  E.皮脂腺囊肿
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• 4左支气管( )
  
  A.比右主支气管短
  B.在奇静脉的下方通过
  C.位于食管胸部之后
  D.在左肺动脉的下方到达肺门
  E.上述全不正确
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• 5肾上腺素不具有下述哪一种作用( )
  
  A.使心肌收缩力增强
  B.使心率加快
  C.使骨骼肌血管舒张
  D.使组织液生成减少
  E.使内脏和皮肤血管收缩
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• 6高渗性脱水与低渗性脱水临床表现的主要鉴别点是( )
  A.手足麻木
  B.口渴明显
  C.视力模糊
  D.恶心、呕吐
  E.脉压减小
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• 7 “I once again solemnly emphasize that it is absolutely unacceptable to sacrifice people’s lives
  A. in the hope of B. in exchange for
  D. in place of D. in search of
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• 8Books are a ______ provider of knowledge and pleasure and some types of books should be in every hom
  A. meaningful B. perfect
  C. replaceable D. wonderful
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• 9Back in the 17th century, intellectual property rights were primarily ____ to protect newly-develope
  A. brought out B. carried out
  C. turned out D. set out
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• 10It doesn’t pay well so she hasn’t taken the job abroad. Meanwhile it’s ____ because her mother is
   A. partly B. absolutely
  C. eventually D. merely
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