高层建筑桩筏基础的筏形承台的最小厚度不应小于（）mm。（）
A.200
B.300
C.400
D.500
参考答案：C
The beautiful dress _______Miss Jones went to the ball was borrowed from a friend of hers.[ ]
A. in which
B. for which
C. that
D. where
打印机的ONLINE灯亮时，表示打印机处于（）。
A、联机状态
B、脱机状态
C、低级格式化
D、硬盘分区
