厕所地面找平层应作好泛水，按规定找坡，地漏周围半径50min内排水坡度为______%。
A．5
B．100
C．10
D．50
参考答案：A
_____ woman is your English teacher? [ ]
A. What
B. Where
C. Which
D. What's
砂轮研磨修整钢锭、钢坯、钢材，实质上是一种特殊形式的车铣。
