单选题
发布日期:2021-03-22
The liquid receiver functions to collect and remove non-condensable gases
A thermostatic expansion valve is used to control refrigerated space temperature
Refrigerant temperature in an evaporator is directly related to refrigerant pressure
Dehydrators must be used continuously in a refrigeration system
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弹簧钢需经淬火+高温回火以获得好的综合机械性能和高的弹性极限。
The joint formed when two steel plates are placed end-to-end is called a().
《中华人民共和国文物保护法》规定,全国重点文物保护单位需要在原址重建的,由()报国务院批准。
多媒体教室是目前许多学校开展多媒体组合教学的主要场所。主要设备包括()。
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轨道车(接触网作业车)柴油机润滑方式有()润滑两种。
患者工作中不慎被浓硫酸烧伤颜面部,最佳紧急处理措施()
女性,36岁。主诉:低热、四肢关节痛3周就诊。请针对该案例,说明问诊内容与技巧。
六淫邪气不可以单独致病。
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