问题
选择题
My parents always stop me ______ with my friends on line. [ ]
A. to talk
B. talking
C. to speak
D. speaking
答案
答案：B
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My parents always stop me ______ with my friends on line. [ ]
A. to talk
B. talking
C. to speak
D. speaking
答案：B
，采用砂井预压法进行地基处理，袋装砂井直径为70mm，砂料渗透系数
，涂抹区渗透系数ks=0.5×10-7cm／s，取s=3，砂井按三角形布置，间距1.4m，深度为10m，砂并打穿受压土层，预压荷载为80kPa，一次适加，加荷速率为8kPa/d，按《建筑地基处理技术规范》（JGJ79-2002）计算。