单项选择题
A.人工B.气动C.液动D.电动
A.0.0196-0.0343B.0.0343-0.0392C.0.0392-0.0490D.0.0490-0.0637
A.0.2-0.6B.0.035-0.084C.0.035-0.1D.0.084-0.1