【简答题】why do we need to write an abstract for our research paper?
【多选题】We write an abstract when ___________.
A.
submitting articles to academic journals
B.
completing and submitting a Ph.D. dissertation or M. thesis
C.
submitting conference papers
D.
selecting which paper to read
【单选题】半自动闭塞区段进站信号机显示一个黄色灯光,准许列车经道岔直向位置,进入站内( )。
【单选题】四显示自动闭塞区段,准许列车由车站出发开往半自动闭塞区间,出站信号机显示()灯光。
【多选题】We write an abstract when ___________.
A.
submitting articles to academic journals
B.
completing and submitting a Ph.D. dissertation or M.A. thesis
C.
submitting conference papers
D.
selecting which paper to read
【简答题】Please refer to the reference textbook and finish task 2 on page 214 and write an abstract for the text in critical reading on pages 183-188 and hand in the abstract online before we finish chapter 8.
【判断题】针对不同个性特点的幼儿要采取不同的教育方法,因势利导因材施
【单选题】When do we need to write an abstract?
A.
When you write a dissertation for a higher degree.
B.
When you submit a research paper for publication.
C.
When your report will be disseminated to an audience.
【单选题】激光器的谐振腔由一面曲率半径为 1m 的凸面镜和曲率半径为 2m 的凹面镜组成,工作物质长 0.5m ,其折射率为 1.52 ,求腔长 L 在什么范围内是稳定腔。