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The anti-stealing of hub cap for fixing couples, and is operated using specific purpose tool, preferably crucial
The anti-stealing of hub cap for fixing couples, and is operated using specific purpose tool, preferably crucial
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机译:用于固定轴对的轮毂盖防盗,并使用专用工具(最好是关键工具)进行操作
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摘要
A plant for space heating and service-water heating, is comprised of a combination boiler and a heat pump. The boiler has a first water chamber adapted to be heated by a furnace and/or a heating insert, a second water chamber which communicates with the first chamber and which contains a heat-exchange surface for heating service water, and a third water chamber containing a heat-exchange surface (36, 36a, 38) for preheating cold service water. A circuit is connected to the third water chamber in the lowest water temperature zone, by means of which, when the heat pump is in operation, water can be fed to the condenser section of the heat pump and, after the water has heated up, be returned to the second water chamber. The third water chamber communicates at least with the second water chamber.
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