A. 选择场址勘察应以钻探及坑探为主，并同时进行工程地质调查
B. 初步勘察时原状土样室内试验项目主要有基本物理性质试验、收缩试验、膨胀力试验、50kPa压力下的膨胀率试验
C. 详勘阶段应确定地基土的胀缩等级
D. 详细勘查阶段每栋建筑物下的取土勘探点不应少于3个
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