信函写作的7C原则 — 国际贸易选择题
题目
某业务员在报盘函中写道："Your early reply would be appreciated, and we hope to ship the goods within a reasonable time at a fairly competitive price." 这句话中的 "reasonable time"、"fairly competitive price" 表述含糊、缺乏具体数据，最直接违背了7C原则中的哪一项？A. Courtesy（礼貌）B. Concreteness（具体）C. Completeness（完整）D. Correctness（正确）