用一个凸透镜成像时，下面说法中正确的是：[ ] A．实像总是倒立的，虚像总是正立

During execution of a project which is performed for a customer on a T & M (time and material)contract base，a new project manager is taking over the assignment．He discovers that two members assigned to the project have charged time without performing any work for the project customer．Upon further investigation，he determines that this occurred because there have been no other project assignments open for these employees．The customer is unaware of these facts．Which of the following should he do ？（）

A．Try to find some productive work for these staff members in the project and leave them on the tea

B．The best thing is to do nothinThe customer will not realize the problem anywa

C．Try to find a responsible person for the over-assignment who can be made accountabl

D．Take the two people off the team immediately and arrange for the refund of the excess charges to the custome

识别数据类的目的在于 Ⅰ．识别在建立信息总体结构中要使用的数据类 Ⅱ．了解企业目前支持企业过程的数据的准确性、提供的及时性和可行性 Ⅲ．查明目前的和潜在的数据共享关系 Ⅳ．确定各个过程产生、使用、缺少哪些数据 Ⅴ．发现需要改进的系统 Ⅵ．确定企业的数据政策 Ⅶ．估算数据量以考虑存储空间的大小

A．Ⅱ、Ⅳ和Ⅵ

B．Ⅰ、Ⅲ、Ⅴ和Ⅶ

C．后6项

D．前6项

测量轴弯曲时，每转一周记录千分表两读数（）、（），两个读数之差说明了轴的（）。

女性，30岁，右大腿外侧麻木2年、检查：下肢肌力5级，无肌肉萎缩，肌张力正常，膝腱反射和跟腱反射正常，无病理反射，右大腿外侧有大片状痛觉减退区，约15×20cm、最可能的诊断为（）

A.股神经炎

B.股外侧皮神经炎

C.坐骨神经炎

D.闭孔神经炎

E.增生性腰椎病

下列项目中不属于流动资产的是( )。

A．货币资金

B．应收账款

C．预付账款

D．累计折旧