A.-1/4
B.1/2
C.1/4
D.4
[单选题]等于( )。A.-1/4B.1/2C.1/4D.4
[单选题]等于( )。A.-1/4B.1/2C.1/4D.4
[单选题]等于( )。A.-1/4B.1/2C.1/4D.4
[单选题]等于( )。A.-1/4B.1/2C.1/4D.4
[单选题]等于( )。A.-1/4B.1/2C.1/4D.4
[单选题]等于( )。A.-1/4B.1/2C.1/4D.4
[单选题],2,3,25,( )。A.256B.625C.784D.856
[单选题]缺失者,义齿的支点线形式为( )。A.直线式B.斜线式C.横线式D.纵线式E.平面式
[单选题]A.-F/2B.0C.F/2D.F