单选题
发布日期:2021-03-22
bleeding refrigerant from the condenser
opening a drain petcock on the oil separator
condensing the water in the heat exchanger
using a dehydrator cartridge
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患者女性,48岁。胃窦部溃疡13年,近年来出现持续性呕吐,呕吐物为宿食,明显消瘦。体格检查最可能发现()
闭口热力系与开口热力系的区别在于( )。[2008年真题]
2010年5月24日,第二轮中美战略与经济对话在()举行
肘关节脱位的特点是()。
肌纤维兴奋后,横管膜的电变化引起肌质网膜通透性改变,肌质网向肌浆释放()。
下图是“我国某大城市各类土地利用付租能力随距离递减示意图”。读图完成下列问题。 当①线变成②线时,则住宅功能区可拓展到()
各种锤、铲、挫、冲、斧等手动工具的材质硬度要适中,表面须()。
补气药中能大补元气、补虚救脱的药物是()
脊髓灰质炎病毒感染人体主要通过()
在决策过程中,解决“干什么”问题的是()
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Moisture is removed from a refrigeration system by().
Moisture is removed from a refrigeration system by().
Moisture in a refrigeration system can cause ().
Moisture in a refrigeration system can cause ().
In an air conditioning system, moisture is removed from the air by()
In an air conditioning system, moisture is removed from the air by()
A refrigeration system contaminated with moisture can be affected by ().
A refrigeration system contaminated with moisture can be affected by ().
Some refrigeration systems have chemical moisture indicators installed in conjun...
Some refrigeration systems have chemical moisture indicators installed in conjun...