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曝光时间指示的偏离是用于检测放射科技师工作时间的准确性。
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Why are college graduates in the video called a dependent generation and what can account for it?
After watching the video, what is your idea or reflection upon the difficulties and struggles the graduates confront after graduation?
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V带的主要型号是根据( )和计算功率由选型图中选取( )。
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