地波传播时，电波有力图绕过地面突起障碍的能力，这一现象称为（）。 A.直射 B.绕射

在下面的Excel表格中选定如下区域进行排序，设置条件如下，则进行排序后C3单元格显示的数据为（）。

A.2500

B.4500

C.3500

D.3400

We are revising our maths notes       the exam next week .[ ]

A. to        

B. in        

C. for        

D. with

1909年初，《大公报》上的一篇文章称“第一是开眼界，可以当作游历，看看欧美各国的风土人情……真如同身历其境，亲眼得见一样……时常看看，岂不比听戏强的多么？”使人们“开眼界”的是 [ ]

A．电视

B．电影

C．报纸

D．广播

发动机润滑油主要有哪些使用性能？

With respect to the CFA Institute Code of Ethics and Standards of Professional Conduct, which of the following is least likely to prompt an inquiry by the CFA Institute Professional Conduct Program

A. Written complaints received by Professional Conduct staffs.
B. A violation report submitted by CFA examination proctors.
C. Internal investigations of members conducted by local CFA societies.