複選題149. A/An _____ agrees only to sell his principal's products, and not those of a competitor. (A)real estate agent (B)sole agent (C)commission agent (D)exclusi ve agent 。

110. 下列書信內容屬何種函件？"While appreciating the a ttractive design of yo ur high-rise bicycles, we suggest you make some allowance. A 10% reducti on would facilitate the transaction and help introduce your goods to the rap idly growing market here." (A)inquiry (B)offer (C)counter-offer (D)sales 。