you have an eraser?[ ]
A do
B does
C Do
D Does
答案:C
Excel2000不可识别的日期数据是______。
A.12/23
B.23/12
C.2/30
D.12-23
下列不属于系统软件的是
A.UNIX
B.QBASIC
C.Excel
D.FoxPro