地基变形计算深度，对于高压缩性土层，可取附加压力等于上覆土层的有效自重压力（）的深度。
A.20%
B.10%
C.5%
参考答案：B
Bill will be away on ----business next week and Lucy will take---place of his position during his absence.
A the; the B/ ; the C the ; / D / ; /
下列哪项最能提示心脏有器质性病变
A.震颤
B.心律不齐
C.窦性心动过速
D.2级收缩期杂音
E.心音分裂
