常二(煤油)线产品干点偏高,则可()。
A.适当增大常二馏出量
B.适当减少常二馏出量
C.适当降低常二线馏出汽相温度
D.适当提高常二线馏出汽相温度
参考答案:B, C
You’re sure to make rapid progress if your plan for study ________ ahead of time.
A.is made
B.has made
C.will be made
D.is making
比较革命统一战线与抗日民族统一战线的主要异同点。