题目内容
活塞式制冷压缩机能量调节最常用的方式是______。
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线性霍尔传感器组成是______。①霍尔元件;②线性放大器;③差分放大器;④射极跟随器;⑤触发器
翻译 The Chinese tax authority has started investigations on tax evasion practices in
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A high-speed aerotrain that could run 400 to 500 kilometers per hour is being developed by China and Japan in a joint effort, the Chongqing Morning Post reported.
翻译 A Chinese air force formation conducted island patrols recently during a training
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