IRR函数的参数values必须包含至少一个正值和一个负值，以计算返回内部收益率。
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在对独立方案进行分析时，净现值与内部收益率的结论总是趋于一致。
A. 对
B. 错
CheckthesentencethatbestdescribesZachary'smainidea.
A. Zacharybelievesthatgrowinguponafarmisgreatforchildren.
B. Zacharyexplainswhyhethinksallchildrenshouldgrowuponfarms.
C. Zacharyexplainswhyhethinksit'sgreattogrowuponafarminsteadofinthecity.
Zacharygivesfourmainreasonstosupporthisidea.Choosethesentencesthatbestexpressthesefourreasons.Labelthem1-4astheyappearinthereading.
A. Farmchildrenunderstandmoreaboutlifeanddeaththancitykids.
B. Watchingthebirthsofanimalsisgoodforfarmchildren.
C. Farmchildrenunderstandsoilbetterthancitykids.
D. Farmchildrenaretoobusydoingfarmworktogetintotrouble.
E. Farmchildrenlearntofixfencesanddrivetractors.
Farmchildrenunderstandmoreaboutnaturethancitychildren.
G. Farmchildrenhaveagreatersenseofresponsibilitythancitykid.
原发性醛固酮增多症应
A. 积极补钾
B. 积极补钙
C. 限制钾摄入
D. 维持血钾>4.0mmol/L
E. 提高血钠
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