在野外条件下对碎石土的密实程度进行鉴别时,宜参考下述()因素。()
A. 骨架颗粒含量和排列
B. 可挖性
C. 可钻性
D. 标贯击数
Would you mind ______ down and wait for a few more minutes?
A.sitting
B.to sit
C.to have sat
D.sit
They have all got up, and _______.
A.so has Tom
B.Tom has too
C.Tom hasn't
D.also has Tom
岩体的基本质量等级分类时主要考虑下述()因素。()
A. 风化程度
B. 坚硬程度
C. 完整程度
D. 岩石成因