施工单位每拌制50m3混凝土或每工作班应测试含气量不少于（）次。
参考答案：1
—If there are _____ people driving, there will be ____ air pollution.
— Yes , the air around us will be fresher and cleaner.
A．fewer; less
B．less; fewer
C．fewer; fewer
D．less; less
部分超筋受扭构件
