单项选择题
A.m3∕（s∙万亩）B.m3∕（亩∙年）C.m3∕（s∙亩）D.m3∕万亩
A.1.2~1.6B.0.8~1.2C.0.45~0.6D.0.2~0.35
A.0.2~0.35B.0.5~0.8C.0.8~1.2D.1.2~1.6
A.支B.斗C.农D.毛
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