根据《建筑基坑支护技术规程》7.3.14要求,喷射井点降水的井间距宜取()m。 ["1.5~3","2~3","1.5~4","2~4"]
善融商务的电子券有() ["通用券","定向券","专户券","全能券"]
当船位在北纬35度,东经125度处时,陀螺罗经主轴指北端的视运动方向应()。 ["偏南","偏北","偏东","偏西"]
根据《建筑基坑支护技术规程》7.3.21要求,管井的成孔施工工艺,钻孔深度宜大于降水井设计深度()m。 ["0.2~0.4","0.2~0.5","0.3~0.4","0.3~0.5"]
善融商务的特色功能有() ["在线信用卡分期支付","信用卡积分支付","个人融资支付","信用卡现金分期"]
《煤矿安全规程》对立井井口有什么规定?