氯化苯甲烃铵与下列哪种药物合用，会使其失去表面活性或抑菌效果
A．苯扎溴铵B．氯化钠C．葡萄糖D．皂类E．有机酸
参考答案：D
Which of the following statements about bonds, indexes, markets, and market efficiency is FALSE（）
A. A price-weighted index assumes the investor holds an equal number of shares of the stocks in the index.
B. Tests of market efficiency find that stock exchange specialists derive above-average returns.
C. The bulk of all bond trading takes place on organized exchanges.
查定调车单项作业占用到发线、咽喉道岔组时间标准，多采用（）。
A、写实法
B、计算法
C、分析法
D、图解法
