A.沉降大而不均勻 B.沉降速率大 C.沉降穩(wěn)定歷史長(zhǎng) D.沉降小而均勻
A.15mm B.16mm C.17mm D.18mm
A.細(xì)砂 B.中砂 C.精砂 D.以上皆不對(duì)