—Is that man(男人) his uncle?       

—_________．

A．Yes, he is

B．Yes, it is

C．No, she isn't

盾构法的主要施工步骤包括()。

A.工作井建造

B.掘进出土(泥)

C.管片安装

D.地表注浆

E.衬砌背后注浆