早产儿的肾小管对醛固醇反应低下，易发生（）
A.低钾血症
B.高钾血症
C.低钠血症
D.高钠血症
E.低钙血症
参考答案：C
An analyst is considering a company that has had Net Income of $ 15000000 on sales of $ 500000000. The company also has a Total Asset Turnover rate of 1.50 and a Total Assets/Equity ratio of 2.0. The company has a target payout ratio of 40%, what is the expected long-term earnings growth rate for this company（）
A. 9.25%.
B. 6.00%.
C. 5.40%.
一般地，操作系统是根据文件的_____来区分文件类型的。
A．主名
B．扩展名
C．打开方式
D．创建方式
