A.瘦B.透C.漏D.皺
A.曲線式設(shè)計(jì)B.自由式設(shè)計(jì)C.直線式設(shè)計(jì)D.規(guī)則式設(shè)計(jì)
A.中水B.壓力水C.地下水D.地上水