单词：heat pump plant annual coefficient of performance
单词：heat pump plant annual coefficient of performance 相关文章
The Worlds Biggest Spittoon In the spring, the eastern half of North America turns into one big spittoon for spittlebugs. Wandering through a meadow, its easy to spot the gobs of foam they produce, stuck to the stems of various plants. What makes spi
英语听力文摘 English Digest
Fukushima Plant Operator: Nitrogen Pumping Operation Going Well A plan to inject nitrogen into the containment vessel around reactor 1 at the Fukushima Daiichi power plant appears to be working, the plant owner said Thursday. Higher pressure levels h
VOA标准英语2011年(四月)
DAVID GREENE, HOST: For now, were going to turn to a story about a heat wave that is affecting much of the country this summer. NPRs Allison Aubrey reports that all of this warmth can slow us down in ways we might not even realize. ALLISON AUBREY, BY
2018年NPR美国国家公共电台7月
Annual performance review [00:07.30]Listen and Share [00:10.72]Annual performance review 年度绩效评审 [00:24.36]词汇扫描 [00:28.58]aggressive [?'gresiv] 积极的 [00:31.60]annual ['?nju?l] 每年的 [00:34.88]overbearing [??uv?'b??ri?] 专横
英语笑话（MP3+文本）
If you visit upland areas of Britain places like the mountains of Scotland, or Wales, or the Pennine Hills in northern England you will see a lot of sheep. Many of the sheep are in places where there are no walls or hedges to keep them in their field
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