员工礼仪规范主要包括()
A.外貌
B.文化修养
C.仪容仪表
D.商业礼仪
E.工作状态要求
正确答案是CD
设矩阵A=,则A*中位于第1行第2列的元素是().
A teacher's（ ）to the cause of education is worth great respect of the whole society because it brings countless benefits to the development of society.
