Ws/Wm
A. 相对迁移率(Rm)
B. 比移值(Rf值)
C. 分配系数
D. 容量因子
E. 保留时间
( ) is a major port of Malaysi
A. George TownB. GdyniaC. Port SaidD. Helsinki
常用电泳仪的电源是
A. λmax<200nm(远紫外区)
B. 200nm左右
C. 200~400nm
D. λmax >210m
E. 100~500V
We must stress that these payment terms ( )very important to us.
A. be
B. being
C. been
D. are