当黄土地基上的自重压力和附加压力之和小于湿陷起始压力时，地基土将产生( )。
A．湿陷变形
B．压缩变形
C．膨胀变形
D．弹性变形
参考答案：B
----- _______ in the workshop. Please stop it.
----- Sorry. I________.
A．Smoking is not allowed, don’t know
B．Not smoking, an not sure
C．Don’t smoke, have no idea
D．Smoking is forbidden, didn’t know
磁盘是一种输入输出设备。
