光电效应试验中，以下哪种测量方法不适合测截止电压()
A. 拐点法
B. 补偿法
C. 放大法
D. 零电流法
查看答案
在迈克尔逊干涉实验中,粗调鼓轮能精确到( )
A. 0.1mm
B. 0.01mm
C. 0.001mm
D. 0.0001mm
Match the questions and statement to the responses.
Match Chinese with the English.
The students ______ have a sports meeting this weekend if it ______.
A. won’t; rains
B. will; rains
C. won’t; will rain
D. are going to; is going to rain
微信支付 
支付宝支付