题目内容
光的干涉和衍射现象反映了光的波动性质，光的偏振现像说明光波是____波（填横或纵）。
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在迈克耳孙干涉仪的一条光路中，放入一块透明薄片，屏上的干涉条纹不会发生任何变化。
线偏振光是横波，部分偏振光不是横波。
光具有偏振现象，所以光是横波。
Identify how the following paragraphs are developed. (comparison & contrast, cause & effect, classification, definition)School uniforms should be mandatory for all students for a number of reasons. First, they make everyone equal. In this way, the “rich” kids are on the same level as the poor ones. In addition, getting ready for school can be much faster and easier. Many kids waste time choosing what to wear to school, and they are often unhappy with their final choices. Most importantly, some studies show that school uniforms make students perform better. Many people might say that uniforms take away from personal freedom, but I believe the benefits are stronger than the drawbacks.
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