题目内容

促进胆囊排空的利胆药物是

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在病原菌结果出来前,经验性选用抗生素是

A. 青霉素
B. 红霉素
C. 第三代头孢菌素
D. 氨基糖苷类抗生素
E. 克林霉素

An increase in the money supply leads to______.

A. a decline in interest rates, a decrease in investment, and an increase in AD
B. a decline in interest rates, an increase in investment, and a decrease in AD
C. a decline in interest rates, an increase in investment, and an increase in AD
D. an increase in interest rate, an increase in investment, and an increase in AD
E. an increase in interest rate, a decrease in investment, and a decrease in AD

促进卵泡发育首选

当a=0.05时,用F检验法检验回归方程中x对y的影响是()。A.显著B.不显著C.不能确定 附:F0.95(1,12)=4当a=0.05时,用F检验法检验回归方程中x对y的影响是()。

A. 显著
B. 不显著
C. 不能确定 附:F0.95(1,12)=4.75;F0.975(1,12)=6.55;F0.95(1,13)=4.60

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