盘活存量，发展增量，促进要素实时重构优化，提升系统整体功能效益，重在营造适宜内外创业的发展环境。
参考答案：对
A graduation ceremony is a custom takes place students graduate from a school.
A．which; when
B．that; who
C．which; whose
D．that; which
因包装或装卸不当造成损失而进行的投诉属于______
A．商品质量投诉 B．购销合同投诉C．货物运输投诉 D．服务投诉
