影响绩效的因素有()。
A.工作者本身的态度、工作技能
B.工作本身的目标、计划
C.工作环境
D.管理机制
参考答案:A, B, C, D
He is always serious and doesn't like _____.[ ]
A. play jokes
B. being played jokes on
C. being played jokes
D. to play joke on others
前牙3/4冠切沟顶角的角度
A.5°B.30°C.45°D.90°E.135°