橡胶衬里常见的缺陷是什么？
参考答案：
橡胶衬里常见的缺陷有：橡胶与金属脱开，橡胶与橡胶之间离层，胶层鼓泡，胶面龟裂有针孔，结合缝不严等。
—Jim, it's time to go to school. Get up and have breakfast.
—But I am not feeling _____. I don't feel like _____ anything. [ ]
A. bad, eating
B. well, eating
C. good, to eat
某施工企业承揽了一项挖土任务，土方量为9000m3，采用甲型液压挖土机进行施工。甲型液压挖土机每台班产量为400m3，单价为1000元/台班，则用该挖土机完成土方开挖的直接费为（）元。
A．20000
B．22500
C．25000
D．27500
