Thursday, September 22, 2022
Thursday, September 22, 2022
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填空题当下塔产生液悬时,最有说服力的象征是()纯度无法调整至标准值。...
Wednesday, February 22, 2023
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在同一种进料组成、热状况及回流比的情况下,若希望得到相同的馏出液组成及回收率时,利用直接蒸汽加热时所需理论板数比用间接加...
Thursday, September 22, 2022
Thursday, September 22, 2022
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Thursday, September 22, 2022
单选题热继电器的主要用途是对电动机起()作用。A 过载保护B 断电保护C 欠压保护D 失压保护...
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多选题()属压缩机组静态调试必要内容。A汽轮机高、中压调节阀升程B径向轴承和止推轴承瓦隙C自动主汽门开关试验D报警、停机联锁值校验...
Thursday, February 23, 2023