Do an experiment _____ me, please. [ ]
A. in
B. up
C. on
答案：C
A．λ甲＞λ乙
B．λ甲＜λ乙
C．λ甲=λ乙
D．无法确定
某碎石桩处理软黏土地基。已知土的承载力为100kPa，碎石桩直径d=0.6m，正方形布桩，间距s=1m，桩土应力比n=5，复合地基承载力为（）kPa。
A.212.8
B.151.1
C.171.1
D.120
