氯化物检查中，排除其他阴离子干扰的方法是
A．加入盐酸
B．加入硫酸
C．加入硝酸
D．加入磷酸
E．加入醋酸
参考答案：C
Consider a corporate bond with a yield of 6. 8% and a municipal bond (with equivalent risk) with a 4.9% yield. Which of the following statements is TRUE（）
A. An investor with a marginal tax rate of 40% prefers the corporate bond.
B. An investor with a marginal tax rate of 15% prefers the municipal bond.
C. An investor with a marginal tax rate of 28% is indifferent between the two bonds.
精神科使用氯丙嗪，主要针对：（）
A.抑郁、木僵
B.软弱无力，精神萎靡
C.兴奋躁动、幻觉妄想
D.情感淡漠
E.记忆智能减退
