题目内容

HPLC系统性试验通常要求分离度应达到基本分离,R应大于1.0

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

HPLC系统性试验对重复性要求是连续进样5次,除另有规定外,其峰面积测量值的相对标准偏差应不大于2.0%。

A. 对
B. 错

HPLC系统性试验一般要求拖尾因子T应在0.95-1.05。

A. 对
B. 错

___ pictures in the park last weekend.

A. take
B. took
C. was
D. draw

Did you ___football yesterday?

A. play
B. played
C. were
D. are