绩效管理是以组织战略为导向的群体绩效是介于组织绩效和个人绩效这两个层次之间的一层绩效。
参考答案：对
________ the last flight. You have to stay here for another night.
A．There comes
B．Here was
C．There goes
D．Here we had
正常活性污泥沉降性能良好，含水率在（）左右。
A.80﹪
B.90﹪
C.97﹪
D.99﹪
