A.Inz≥1.2I2dmin B.Inz≥1.5I2dmin C.Inz≥4I2dmin D.Inz≥4~7I2dmin
A.Irz≥4~7I2dmin B.Ire≥5~7I2dmin C.Irz≥3~7I2dmin D.Irz≥1.2~1.4I2dmin