前期固结压力小于现有覆盖土层自重应力的土称为（）
A.欠固结；
B.次固结；
C.正常固结；
D.超固结。
参考答案：A
When the old man ______ to walk back to his house, the sun ______ itself behind the mountain.
A．started; had already hidden
B．was starting; hid
C．had started; had already hidden
D．had started; was hiding
工艺管理
