打点计时器是测量______的工具,其频率为______赫兹. 发布时间:2017-07-01 16:37 │ 来源:www.tikuol.com 题型:填空题 问题: 打点计时器是测量______的工具,其频率为______赫兹.
题型:填空题 CONVERSATION 1 (Questions 1-4) About the test: Lasting (1) hours. Time to know the result: (2) Relationship of the two people: (3) and (4) . 查看答案