单项选择题
A.1/3 B.2/3 C.1/2 D.4/5
A.95%~105% B.105%~2110% C.110%~115 D.115%~120%
A.40Gr B.40Co C.40Mn D.40Mi
A.公称流量 B.公称压力 C.液箱容积 D.乳化油储存容积
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