题型:名词解释 A car accident ________ him last week. [ ]A. took place to B. happened on C. happened to D. happens to 查看答案
题型:名词解释 楼梯间的内墙面石灰砂浆工程量为250m2,施工系数为1.25,其时间规定为0.105工日/m2。抹水泥砂浆明护角线50m,其定额规定为0.016工日/m,采用常日制施工,班组出勤人数为15人。试求:1)计划人工是多少2)完成该分项工程需要总天数 查看答案