Parex模拟移动床工艺中,用()表示芳烃进料流量。
A.A
B.Vw
C.W
D.Fa
参考答案:D
以下的各图中,真空中两个等量异种电荷产生的电场线分布图是( )
A.
B.
C.
D.
You might as well ___ him alone no matter what he will say.
A.to leave
B.forget
C.leave
D.to forget