食管有哪几处狭窄?各距切牙多少厘米?

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问题:

食管有哪几处狭窄?各距切牙多少厘米?

考点:基础医学消化系统消化系统题库
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I was used to be the shyest person in the world. I often hide behind my mother whenever there came a visitor. When asking to speak in class, I could hard breathe. Then in the seven grade, I had a new English teacher, Miss Creen. One day, he asked me a question but I didn’t know the answer of it. I stood there, not knowing what to say. Learning that I was a shy person after class, she gave me some advices. She said, “Remember to smile after doing everything, and you’ll feel good about yourself.” Now I’m not a shy person. With smile, I can meet people without being afraid.

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职能管理部门负责本业务范围二级风险管理,包括建立风险管理清单、完善风险应对措施、实时监测与评审。

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图像平滑的目的,方法?

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关于国家声环境质量标准和环境噪声排放标准的以下表述中,不正确的是( )。

A.国家环境保护行政主管部门制定环境噪声排放标准

B.国家环境保护行政主管部门制定声环境质量标准

C.根据国家声环境质量标准和国家经济、技术条件制定环境噪声排放标准

D.制定声环境质量标准无需划分不同功能区

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如果将价格革命前欧洲拥有的货币总量设为100,按传统方式收取定额货币地租的封建地主拥有的货币总量(m)设为60,商人、新兴资产阶级、新贵族拥有的货币总量(n)设为40,若价格革命后欧洲货币总量上升为1000,那么,下列关于m、n的四组数据,可能正确的是()

A.m为700,n为300

B.m为500,n为500

C.m为600,n为400

D.m为800,n为200

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