A、G41 B、G42 C、G43 D、G40
A、S B、MS C、r/min D、m/min
A、必須對(duì)應(yīng)一致 B、有一定的對(duì)應(yīng)關(guān)系,有時(shí)無(wú)關(guān) C、無(wú)對(duì)應(yīng)關(guān)系,視需要而定
A.0.02% B.0.2% C.2% D.0.002%