一个服务顾问很熟悉的客户每次都要求打折，此客户的顾客类型应该是（）
A.情感关系导向型
B.性价比导向型
C.时间效率导向型
参考答案：B
因为结构中含有环氧桥，易进入中枢神经的药物（）
A．硫酸阿托品
B．氢溴酸东莨菪碱
C．氢溴酸山莨菪碱
D．氢溴酸加兰他敏
E．溴丙胺太林
Two dogsled teams raced across a 300-mile course in Wyoming. Team A finished the course in 3 fewer hours than did team B. If team A’s average speed was 5 miles per hour greater than that of team B, what was team B’s average speed, in miles per hour ？（）
A. 12
B. 15
C. 18
D. 20
E. 25
