具有疏通作用，能治闭塞梗阻症的药味是
A．甘味药物B．酸味药物C．咸味药物D．辛味药物E．苦味药物
参考答案：C
The patient was warned _______ oily food after the operation. [ ]
A. t o eat not
B. eating not
C. not to eat
D. not eating
客户服务的构成因素被分为（）三类。
A.市场调查
B.客户分类
C.交易前
D.交易中
E.交易后
