换填法适用于处理各类软弱土层,其处理深度通常控制在()范围内,较为经济合理。 ["A.3m以内","B.5m以内","C.8m以内","D.15m以内"]
编制动态数列的基本原则是要使动态数列中各项指标数值具有() ["A、可加性","B、可比性","C、一致性","D、同质性"]
在换填法施工时,一般情况下,垫层的分层铺填厚度应取为() ["A.100-150mm","B.200—300mm","C.300—400mm","D.350—500mm"]
测定初级生产量的方法有哪些?
下列指标属于总量指标的是() ["A、人均粮食产量","B、资金利税率","C、产品合格率","D、学生人数"]
简述利比希最小因子定律