单项选择题
A.随之增大B.与之无关C.随之减少D.先增加后减少
A.砂土B.粘土土C.粉土D.粉质粘土
A.10mm,200mmB.12mm,300mmC.14mm,250mmD.16mm,300mm
A.C15B.C20C.C25D.C30
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