英语 词汇题 较难

售后服务与增值服务 — 英语词汇题

剑桥商务英语(BEC) 客户服务与关系 AI 三重审校通过

题目
Choose the word that best completes the sentence: To strengthen customer loyalty, the company offers free training sessions and a 24-month warranty as part of its ______ service package. A. after-sales B. over-the-counter C. pre-launch D. off-peak