⑴、轉(zhuǎn)化反應(yīng)的操作溫度; ⑵、轉(zhuǎn)化反應(yīng)的進(jìn)氣濃度; ⑶、轉(zhuǎn)化器的通氣量。
A.2mg/l B.0.2mg/l C.0.02mg/l D.0.002mg/l
A.氯丁橡膠 B.丁基橡膠 C.丁腈橡膠 D.氟橡膠