沉淀池是应用沉淀原理去除水中悬浮物的一种水处理设施，沉淀池的水力停留时间越短越好。（）
参考答案：错
The businessman is very modest about his success. He says it’s _____ the result of good luck as of his own diligence.
A．more than
B．so much
C．more
D．as much
五灵脂用治血瘀诸痛常配伍的药是
A．蒲黄
B．川楝子
C．郁金
D．延胡索
