【单选题】听力原文:V: Could you tell me a bit about quality control at the factory? P: Well, there are four main quality control inspection points. We begin by visiting our suppliers to make sure we are happy with ...
【单选题】听力原文:V: Could you tell me a bit about quality control at the factory? P: Well, there are four main quality control inspection points. We begin by visiting our suppliers to make sure we are happy with ...