透析器的透析效率与下列哪项因素无关（）
A.浓度差
B.渗透压差
C.透析膜的孔径大小
D.透析开始的时间
E.反应液的温度
参考答案：D
根据汉语，用时间状语从句完成下列句子。
1. We were working in the fields ______ (当天开始下雨时) .
2. Mike got up ______ (他一听到铃声).
3. She went to bed ______ 她完成作业后)
4. He didn't go home ______ (直到他看到) his father.
5. Don't forget to check your homework ______ (在你上交之前).
规划环境影响评价，应当在（）上报审批前进行。
A.规划编制过程和初步设计
B.规划编制过程和规划草案
C.规划编制过程和审核报告
D.规划编制过程和开工报告
