A.技術(shù)規(guī)范B.社會(huì)規(guī)范C.道德規(guī)范D.人與自然間的規(guī)范
A.統(tǒng)籌B.和諧C.凝聚D.協(xié)調(diào)
A.干拌砂漿B.砂漿C.砂石D.混合砂漿