在注射剂中具有止痛和抑菌双重作用的是()
A.苯甲醇
B.三氯叔丁醇
C.尼泊金乙酯
D.亚硫酸氢钠
E.EDTA
参考答案:A
—What do you mean by saying money makes money?
—______, the more you invest, the greater your potential profit will be.
A.To be honest
B.To begin with
C.To tell you the truth
D.To put it another way
如右上图所示条形分布荷载p=150kpa,计算G点下3m处的竖向压力值。