下列哪项是运营系统的职能？（）
A.物质保障
B.信息保障
C.门店开发
D.财务保障
参考答案：C
We have lodged a claim ______ the seller for the shortage of shipment ______ S. S. DONGFENG.
A．against, ex
B．with, under
C．on, as per
D．with, to
食用菌菌丝体阶段和子实体阶段适宜温度相同。
