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举一反三
【单选题】下列关于食管下括约肌（LES）的说法错误的是（）。
A.
LES是指食管末端约3～4cm长的环形肌束
B.
腹压增加时LES压下降
C.
妊娠可使LES压下降
D.
正常休息时LES压为10～30mmHg
E.
多食巧克力对预防胃食管反流有利
【单选题】The 811 billion self-help industry is built on the idea that you should turn negative thoughts like 'I never do anything right' into positive ones like 'I can succeed.' But was positive thinking advoc...
A.
It is a highly profitable industry.
B.
It is based on the concept of positive thinking.
C.
It was established by Norman Vincent Peale.
D.
It has yielded positive results.
【单选题】当洪水即将来临时,应对洪水灾害的正确方法是
A.
到屋顶、大树或附近小山丘上暂避
B.
及时报告,统一组织抢险救灾
C.
有序的进行人员和财产转移
D.
有序的将人员和财产向高出转移
【单选题】下列有关食管心房调搏的描述，不正确的是（）
A.
对常见室上性心动过速发生机制的判断可提供帮助
B.
诱发和终止房室结折返性心动过速
C.
有助于鉴别室上性心动过速伴室内差异性传导与室性心动过速
D.
有助于对自主神经功能的检测
E.
有助于确定病态窦房结综合征的诊断