【单选题】Convenience foods which are ready for cooking are ______ in grocery stores.
【单选题】Convenience foods which are already prepared for cooking are ______ in grocery stores. [ ]
【单选题】建设项目初步可行性研究阶段的投资估算的误差率应控制在()
【单选题】Convenience foods which are already prepared for cooking are______ in stores.