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()原因可造成活塞式压缩机排气量显著下降。A、气缸润滑不良B、吸气阀片损坏、断裂C、循环油温高D、介质温度高...
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单位质量燃料完全燃烧后,生成的水呈汽态时放出的热量为()。A、发热值B、低发热值C、高发热值D、燃烧热...
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蒸发指液体表面上的分子向汽相中扩散的过程,蒸发过程只包括()、()两个过程,如汽包操作。...
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