若x2+mx+4是完全平方式,则m=( )
±4
Children, either in the city or in the country, should have ______ to the equal education. [ ]
A. chance
B. choice
C. access
D. approach
下列各项,影响企业利润总额的有()。
A.投资收益
B.财务费用
c.所得税费用
D.营业外收入