摘要：在-对面
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在探究“家用电器”的综合实践活动中，小明与同学合作，在爸爸的协助下，以家里的电水壶为观察、研究对象，记录了如下表中的有关数据。
根据上表中的记录，请解答下面的问题。
（1）求通电2min壶中的水吸收的热量；［c水＝4.2×103J/（kg·℃）］（2分）
（2）求电水壶中发热体正常工作时的电阻值；(2分)
（3）求2min内电水壶消耗的电能和实际功率。(3分) 查看习题详情和答案>>
根据上表中的记录，请解答下面的问题。
（1）求通电2min壶中的水吸收的热量；［c水＝4.2×103J/（kg·℃）］（2分）
（2）求电水壶中发热体正常工作时的电阻值；(2分)
（3）求2min内电水壶消耗的电能和实际功率。(3分) 查看习题详情和答案>>
面对低效照明电光源存在浪费能源和污染环境的严峻形势，中国1996年启动绿色照明工程。实施之初照明节电产品存在技术水平低、产品质量不稳定等问题。通过多年不懈努力，高效照明产品的普及应用，推动了全社会照明节电意识的普遍提高。2011年11月1日中国发布淘汰白炽灯路线图，决定从2012年10月1日起，按功率大小分五个阶段逐步禁止进口和销售普通照明白炽灯。采用高效照明产品替代白炽灯，将有利于积极应对全球气候变化，实现“十二五”节能减排目标。
（1）运用唯物辩证法发展观分析上述材料。（10分）
（2）请运用社会存在与社会意识辩证关系原理说明我国启动绿色照明工程、逐步淘汰白炽灯的必要性。（6分） 查看习题详情和答案>>
（1）运用唯物辩证法发展观分析上述材料。（10分）
（2）请运用社会存在与社会意识辩证关系原理说明我国启动绿色照明工程、逐步淘汰白炽灯的必要性。（6分） 查看习题详情和答案>>
在下面对话的空白处填入适当的话语（话语可以是句子、短语或词） 使对话完整。
A: Excuse me. I’m new here in this school. 【小题1】 ____________ some rules here?
B: Sure.
A: First, where can I put my bike?
B: Students’ bikes can be put behind that building.
A: 【小题2】 ____________ if parents come to see me on their bikes?
B: Guests aren’t 【小题3】____________ leave their bikes inside the school. They have to put their bikes outside the school gate.
A: Second, can we bring out lunch to the classroom?
B: 【小题4】____________ finish it in the dining hall. We don’t allow eating lunch in the classroom.
A: Oh, I see. Are there any rules about playing sports? Are we allowed to bring our own equipment here?
B: 【小题5】 ____________ But you don’t have to bring your own equipment to school. Our school has all kinds. You can choose any to enjoy yourself. 查看习题详情和答案>>
A: Excuse me. I’m new here in this school. 【小题1】 ____________ some rules here?
B: Sure.
A: First, where can I put my bike?
B: Students’ bikes can be put behind that building.
A: 【小题2】 ____________ if parents come to see me on their bikes?
B: Guests aren’t 【小题3】____________ leave their bikes inside the school. They have to put their bikes outside the school gate.
A: Second, can we bring out lunch to the classroom?
B: 【小题4】____________ finish it in the dining hall. We don’t allow eating lunch in the classroom.
A: Oh, I see. Are there any rules about playing sports? Are we allowed to bring our own equipment here?
B: 【小题5】 ____________ But you don’t have to bring your own equipment to school. Our school has all kinds. You can choose any to enjoy yourself. 查看习题详情和答案>>
在下面对话的空白处填上适当的话语（话语可能是句子，短语或单词），使对话完整
A: Morning, Jack. You don’t look well. 【小题1】__________________________?
B: Well, I have got a cold. But it’s not serious. Hey, Tom, did you see the movie on CCTV6 last night?
A: No, I didn’t. 【小题2】_____________________?
B. Harry Potter.It was so exciting. So, what were you doing at that time?
A: 【小题3】____________________. I’m not good at English, you know.
B: But English is not very hard to learn. 【小题4】_________________________.
A: Thank you for your advice. 【小题5】_______________________________? 查看习题详情和答案>>
A: Morning, Jack. You don’t look well. 【小题1】__________________________?
B: Well, I have got a cold. But it’s not serious. Hey, Tom, did you see the movie on CCTV6 last night?
A: No, I didn’t. 【小题2】_____________________?
B. Harry Potter.It was so exciting. So, what were you doing at that time?
A: 【小题3】____________________. I’m not good at English, you know.
B: But English is not very hard to learn. 【小题4】_________________________.
A: Thank you for your advice. 【小题5】_______________________________? 查看习题详情和答案>>