We have received your enquiry of October 15_____we learn that you are interested in our Sewing Machines.

We would appreciate____us a best price for the goods we enquired

如果区域内成员国的所有经济部门均纳入一体化的范畴之内，这种一体化形式称为()

根据产品生命周期理论，产品成熟期应选择()

依据我国法律规定，()不能转让。