A.≥1.0mB.≥0.7mC.≥1.4mD.≥0.5m
A.〉1.0mB.〉0.7mC.〉0.6mD.〉0.5m
A.≥0.7m,≥1.4mB.≥0.5m,〉1.0mC.≥0.7m,〉1.4mD.≥0.5m,≥1.0m