问题
单项选择题
[选修3-3]
(6分)重庆出租车常以天然气作为燃料,加气站储气罐中天然气的温度随气温升高的过程中,若储气罐内气体体积及质量均不变,则罐内气体(可视为理想气体)
A.压强增大,内能减小
B.吸收热量,内能增大
C.压强减小,分子平均动能增大
D.对外做功,分子平均动能减小
答案
参考答案:B
[选修3-3]
(6分)重庆出租车常以天然气作为燃料,加气站储气罐中天然气的温度随气温升高的过程中,若储气罐内气体体积及质量均不变,则罐内气体(可视为理想气体)
A.压强增大,内能减小
B.吸收热量,内能增大
C.压强减小,分子平均动能增大
D.对外做功,分子平均动能减小
参考答案:B
How many men do housework? Recently a European commission(委员会) tried to find out people’s ideas and reactions to the women’s movement. As part of their survey(调查), they asked many men and women the question, “Who does the housework?” The men answered very differently from the women! The housework they asked people about was: preparing meals, washing dishes, cleaning the house and babysitting. 48% of British husbands said they did these things. 37% of Danish(丹麦的) men helped in the house. But only 15% of Italian men said they did the housework; many of them said they never helped at all! But there was an interesting point of view from the wives. According to British wives, only 38% of their husbands helped in the house. And Italian wives said that their husbands hardly ever helped. The Italian and British men did not tell the truth! The Commission found that Danish men were the most truthful husbands; their answers were the same as their wives’ answers. Do the men you know help in the house? Do you think the survey gives a true picture in your experience? Write and tell us what you think. 小题1: The survey was carried out in _______.
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