47. While performing an experiment for determining the focal length of a concave mirror by u-v method, a student recorded the given sets of the positions (in cm) of the object and the corresponding image on the
The reactants are introduced into a reaction module selectively coupled to residence time chambers or directly to an analytical unit. The analytical unit determines the yield and/or quality for each optimization experiment, enabling optimal parameters to be determined. Residence time chambers can be ...
While performing the experiment to study the dependence of current on potential difference across a resistor., following observtaions were made by four studen
A. experiment实验;B. encounter邂逅;C. competition比赛;D. appointment任命。根据后文“with a local that all travelers long for”指作者和当地人有了一次美妙的邂逅。故选B。 42. D 考查动词词义辨析。句意:一位年轻中国男子在火车上向我走来。A. treated对待;B. saved拯救;C. lectured演讲;D. ...
例句:While the orchestra is performing, the conductor is monitoring every section.(乐团演奏时,指挥正监控每个声部。) 不同步动作: 如果从句动作早于或晚于主句动作,则从句可使用一般过去时。 例句:While the audience settled in their seats, the stage lights gradually brightened.(观众入座时,舞台灯光渐亮。
New York city police captured a cow on the loose in Prospect Park on Tuesday after the animal became an attraction for tourists while walking along the streets and enjoying the park facilities. 2019年12月四级真题(第一套)听力 Section A Sasaki re-ran the experiment while presenting the sleeping...
In another 52 experiment, test subjects were asked at random moments whether their attention was actually focused on the task while performing a task. The results showed that the periods of 53 attention were when the most mistakes were made, but they also offered a possible way to solve the ...
B. By performing a survey. C By referring to documents. D. By conducting an experiment.34. What is Mark Blagrove's attitude towards the treatment? A. Unclear. B. Negative. C. Doubtful. D. Approving35. What is the author's purpose of writing the text? A. To share a discovery. B....
While most people will still probably need, and be, to some extent, clock-timers, task-based timing should be used when performing a job that requires more creativity.出自-2015年12月阅读原文 The staff are equipped with iPads to take your payment while you relax on a sofa.出自-2015年12月...
This unbeatable price-point encouraged me to experiment with dozens of titles that I would never normally consider buying. And I’ve discovered some great books! If I ever get trapped outside my house again, my local telephone...