子宫的正常位置是
A．轻度前倾前屈位B．前倾前屈位C．水平位D．后倾后屈位E．轻度后倾后屈位
参考答案：A
加入哪种药物可以延长利多卡因局部注射的作用时间（）
A.羧甲基纤维素钠
B.琥珀胆碱
C.去甲肾上腺素
D.阿托品
E.肾上腺素
The following data pertains to a company’s common-sized financial statements. Current assets 40% Total debt 40% Net income 16% Total assets $ 2000 Sales $1500 Total asset turnover ratio0.75 The firm has no preferred stock in its capital structure. The company’ s after-tax return on common equity is :（）
A. 15%.
B. 16%.
C. 20%.
