The county, ________ in the north of Shanxi, has a history of more than 1,400 years.

A．located

B．to be located

C．being located

D．locating

生产经营性项目投产后，为进行正常生产运营，用于购买原材料、燃料，支付工资及其他运营费用等所需的周转资金是工程建设项目投资中的( )。

A．建设投资

B．建设期利息

C．工程建设其他费用

D．流动资金