已知下列命题:①对角线互相平分的四边形是平行四边形；②对角线互相垂直平分的四边形

The project team has added some additional functionality which was not required as part of the project. However the customer is satisfied with the project. From a quality perspective, ______ .

A) this is high quality because it exceeded customer expectations
B) this is not acceptable quality because gold plating was done which is not advisable
C) this will mean repeat business from the same customer
D) none of the above

简述影响企业员工薪酬水平的主要因素。

工作A的工作持续时间为3天，该工作有三项紧后工作，工作持续时间分别为4天、6天、3天；最迟完成时间分别为16天、12天、11天，则工作A的最迟开始时间为第（）天。

A．6 

B．3 

C．8 

D．12

古人归纳总结出许多观天象识天气的谚语，下列与天气变化无关的谚语是（）

A．朝霞不出门，晚霞行千里

B．天上鱼鳞云，地下雨淋淋

C．东风是个精，不下也要阴

D．百日连阴雨，总有一日晴

第四代评价的基本特点是什么？