钻孔桩清孔施工中错误的是()。
A.注意保持孔内水头
B.用加深钻孔深度的方法代替清孔
C.清孔可采用换浆、掏渣等方法
参考答案:B
That car accident ______ all his life.After that he was limited to a wheelchair. [ ]
A. damaged
B. destroyed
C. harmed
D. ruined
麦克风:话筒
A.巧克力:糖果
B.炒鱿鱼:解雇
C.引擎:发动机
D.买单:结账