While the examination is being carried out, ______ shall be present and responsible for moving the goods, opening and restoring the packing.

A. the consignee of the import goods and the consignor of the export goods
B. Customs officer
C. harbour officer
D. the owner of the ship

四部门经济的有效需求模型是考虑了什么因素？（）

A、政府

B、证券机构

C、民间借贷组织

D、外国