实行最严格的环境保护制度,形成()共治的环境治理体系。
A、政府
B、企业
C、消费者
D、公众
参考答案:A, B, D
The climate change conference has come to __________ end, but the developing countries are dissatisfied with __________ small step that the developed countries have taken to reduce the emission(排放) of water gases.
A.不填, a
B.不填, the
C.an , a
D.an, the
某太阳能热水器内装0.8m3的水.夏天天晴时,这个热水器接受阳光照射4h可使水温从20℃升高到65℃.在此过程中,水吸收的太阳能有多少J?相当于燃烧多少kg热值为3.36×107J/kg的无烟煤?