题型:问答题 简答题 —Do you know what "Helping Center" does? —Yes. It serves the disabled and it is similar to charities.A. really B. specially C. trulyD. extremely 查看答案
题型:问答题 简答题 某砖砌体柱,截面尺寸:490mm×620mm(b×h),砖柱计算高度H0=4.8m,采用MU10级烧结多孔砖(孔洞率为33%)、M7.5级水泥砂浆砌筑,砌体施工质量控制等级为B级。试问,此砖柱抗压强度设计值(N/mm2),与下列何项数值最为接近A.1.69B.1.52C.1.37D.1.23 查看答案