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【简答题】
大气温度为300K，从温度为1000K的热源放出热量100kJ，此热量的有效能为______。
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反馈参考答案：
举一反三
【简答题】A．He is a worker. B．He enjoys music. C．He has another player D．He lost 20 dollar.
【简答题】He enjoys being flattered
【简答题】A．He hates playing chess. B．He can play chess well. C．He does not play chess. D．He enjoys playing chess.
【简答题】A．He enjoys talking about pets B．He agrees that the woman is quite knowledgeable C．He dislikes people who think they know everything D．He hates standing in line
【单选题】What does Harry enjoy after work each day?
A.
He enjoys watching TV.
B.
He enjoys talking with his wife.
C.
He enjoys wasting his time.
D.
He enjoys doing anything.
【简答题】A．He is a worker. B．He enjoys music. C．He has another player D．He lost 20 dollar.
【单选题】He goes shopping so frequently not because he is rich, but because he enjoys ______ politely.
A.
speaking
B.
being spoken to
C.
being spoken
D.
speaking to
【单选题】解释性研究的目标是( )
A.
发现新现象和新问题
B.
对社会现象的状况、过程和特征进行客观准确地描述
C.
解释社会现象的原因和说明社会现象之间的关系
D.
获得对所研究问题及调查对象的初步印象和感性认识
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