championship for Mercedes-AMG, but on this occasion,BMWcelebrates 50 years of motorsport success by detailing the P48 power unit in the M4 DTM in comparison to the M121 from half a century ago. The Bavarians won the European Touring Car Championship with Dieter Quester a...
氢气是21世纪极有前途的新型能源，是各国研究的热点之一.氢能开发的首要问题是研究如何以水为原料制取氢气.以下研究方向你认为可行的是（ ）①大量建设水电站，用电力分解水制取氢气；②设法将太阳能聚焦，产生高温，使水分解产生氢气；③寻找更多的化石燃料，利用其燃烧放热，使水分解产生氢气；④寻找特殊...