A.線(xiàn)終點(diǎn)(10,-0.1) B.線(xiàn)起點(diǎn)(10,-0.1) C.順圓終點(diǎn)(-0.1,0)
A.線(xiàn)終點(diǎn)(-0.1,5) B.線(xiàn)起點(diǎn)(-0.1,5) C.圓終點(diǎn)(-0.1,5)
A.開(kāi)冷卻液 B.開(kāi)走絲 C.關(guān)冷卻液