市场采购出口货物报检和检验检疫程序与大货贸易相反。
参考答案：错
John promised his doctor he _____ not smoke and he has never smoked ever since.
A．might
B．should
C．could
D．would
网络环境中企业合作的焦点是（）
A.数据库
B.营销
C.技术
D.客户资源
