How many years is construction of the new capital scheduled to take

A．About 23 years.

B．About 27 years.

C．About 30 years.

D．About 13 years.

建设项目信息编码和分类包括( )。

A．建设项目的结构编码

B．合同编码

C．实用性编码

D．工程档案编码

E．函件编码