第10题: [单项选择]The purpose of the quality assurance staff is to inspect every product before it leaves the warehouse and make sure no ______ merchandise reaches customers. A. guaranteed B. perceptible C. defective D. avoidable 参考答案:C 答案解析:[词汇] defective有缺陷的 [错误答案] (A)有保证的(B)可感知的(D)可避免的