单项选择题
A.26374.7m,6593.7m B.6593.7m,26374.7m C.7903.6m,17394.7m D.17394.7m,7903.6m
A.1倍 B.2倍 C.3倍 D.4倍
A.为零 B.不为零 C.小于1 D.等于1