教育科学研究方法
参考答案:
采购订单计划是()的实际采购清单。
A.采购产品
B.采购计划
C.订单计划
D.产品需求
—Are they working near the house?
—_____. [ ]
A. Yes, there are
B. No, there isn't
C. No, there aren't
D. Yes, they are