A.零部件轉(zhuǎn)動靈活 B.限位器動作正確 C.犁刀口無鈍口 D.下托輥座應(yīng)牢固、不轉(zhuǎn)動
A.5 B.10 C.15 D.20
A.JS-100 B.KD-150 C.PCH1016 D.GH-30