低应变法检测混凝土灌注桩完整性，宜在成桩（）d以后进行。
A.7
B.28
C.14
D.3
参考答案：C
The boy was at the terrible story, which was written for adults.
A．scary
B．scaring
C．scared
D．scared
高血压患者肾脏，其大体如图所示，该肾脏又称为（）。
A.继发性颗粒性固缩肾
B.大红肾
C.原发性颗粒性固缩肾
D.大白肾
E.蚤咬肾
