A、38.8 B、38.7 C、38.9 D、39.0
A、由深向淺 B、由里向外 C、由左向右 D、由上向下
A.施工技術(shù)簡(jiǎn)單、快速、經(jīng)濟(jì)B.施工技術(shù)復(fù)雜、快速、經(jīng)濟(jì)C.施工技術(shù)簡(jiǎn)單、緩慢、經(jīng)濟(jì)D.施工技術(shù)簡(jiǎn)單、快速、方便