精馏过程的总物料衡算式为:F=D+()W。
A.回流量
B.釜液流量
C.塔顶产品采出率
D.塔底产品采出率
参考答案:B
冷、切焦水部分的任务?
For convenience, England is divided ______into three geological zones.[ ]
A. profoundly
B. definitely
C. eventually
D. roughly