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【单选题】
近端肾单位的主要功能是（）A.
尿液的浓缩和稀释
B.
释放血管升压素
C.
释放肾素
D.
分泌醛固酮
E.
分泌氯化钠
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反馈参考答案：
举一反三
【简答题】Telecommuting, also known as teleworking or working from home, is a term that, refers to the use of telecommunications to work in a place removed from the company's office, most often at a home office...
【单选题】According to F. de Saussure, ______ refers to t he abstract linguistic system shared by all the members of a speech community.
A.
langue
B.
language
C.
performance
D.
parole
【单选题】This Certificate will remain in force until May 1，2009． ______.
A.
This Sentence refers to the validity of the Certificate
B.
This Sentence refers to the time of the Certificate
C.
This Sentence refers to the date of the Certificate
D.
This Sentence refers to the issue of the Certificate
【单选题】正常分娩时,保护会阴的时间是
A.
初产妇胎先露拨露会使会阴后联合皮肤紧张时
B.
初产妇胎先露着冠
C.
初产妇宫口开全
D.
经产妇宫口开4-5cm，宫缩规律有力时
E.
初产妇宫口开4-5cm，宫缩规律有力时
【简答题】论述一节好课的评价标准。
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