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【单选题】
Try to detect from the author's floating thoughts the central theme of this article.A.
Divorced parents have more worries about their young adult children than those who stay in their marriage.
B.
Mountain roads with hidden dips and blind turns are especially dangerous for new, young drivers.
C.
Recalling his own teenage experience of driving, the author is ready to see Jesse's growth in his adventures and pleasure of dring
D.
Parents have a hard time adjusting to the growth of their children and their imminent independence.
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【单选题】空调房间的冬季热负荷计算,应该按照下列哪一项进行( )
A.
按不稳定传热简化计算
B.
按夏季的冷负荷加以修正
C.
和采暖热负荷计算完全一样
D.
按稳定传热方法计算