散寒止痛，治虚寒腹痛泄泻宜选（）
A.吴茱萸
B.丁香
C.肉桂
D.附子
E.干姜
参考答案：A, B, C, D, E
The owner of a firm gathers some information about her business. This year the firm's revenue is $300000. Cash expenses are $170000. Normal profit is $70000. Economic depreciation is $20000. If the owner could have earned $30000 per year in wages working for another company, the firm's economic profit is closest to:（）
A. $10000
B. $30000
C. $60000
投标人的下列投标行为中，不违反招投标法的是( )。
A．互相串通投标 B．以他人名义投标C．投标人以低于成本的报价投标 D．法人联合体以一个投标人的身份共同投标
