请在 下方输入 要搜索的题目:

When buyers are not so familiar with the new products or not so convinced by the reputation of the seller, they will make an initial attempt by ordering a small quantity of certain products, which is known as ___________.


A、a firm offer ;
B、a non-firm offer
;
C、a further order ;
D、a trial order

发布时间:2025-09-01 10:06:17
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答案:a trial order
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