单项选择题
A.50N/s±10N/sB.2000N/s±200N/sC.100N/s±10N/sD.2400N/s±200N/s
A.高度约300mm,体积应大于0.25m3,质量大于600kgB.高度约400mm,体积应大于0.30m3,质量大于500kgC.高度约400mm,体积应大于0.25m3,质量大于600kgD.高度约300mm,体积应大于0.25m3,质量大于500kg
A.0.30B.0.45C.0.50D.0.55