家用电热水器中的电阻丝是利用电流的 ______效应来工作的,工作时给质量为50kg的水加热,若水的温度由20℃升高到38℃,则电阻丝消耗的电能是 ______kW•h(不计热量损失).
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老年人过多补硒可引起()。
A.抑郁症
B.胃出血及黑便
C.诱发或加重青光眼
D.出现室性心动过速
E.恶心,呕吐,毛发脱落,指甲异常
补全对话。 | |
A: Mr. Fred, you often help children. 1 B: Yes, of course. Children often write to me and ask me how to solve their problems. A: 2 B: Many can't decide when to study and when to play. I think they should learn to achieve a balance between study and play. A: I agree. Sometimes I get too much homework and 3 B: You must feel stressed from time to time, right? A: Yes. Can you give me some advice? B: OK. 4 A: I see. Any more? B: Yes. You can also get help from youth workers at your own school. A: Thanks for your advice. B: 5
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桑叶、菊花的功效共同点是()
A.疏散风热
B.平抑肝阳
C.清热解毒
D.清肝明目
E.清肺润燥
煤气站的生产、输送系统均应按规定装放散管,且放散管至少高出厂房顶()m以上。
A.2
B.3
C.4
D.5
某甲与某乙系父子关系,某甲系农民,年老多病,某乙农转非后,落户县城,经营汽车修理,收入可观,因乙长期不给甲赡养费致甲生活困难,1992年,某甲就此诉至法院,人民法院判决某乙每月给付某甲生活费40元,甲、乙均服判,到2002年,由于生活费用提高,某甲身体不好,医疗费用增多,只好再次向法院起诉,要求某乙增加赡养费。发生下列哪些情况,人民法院可终结诉讼
A.某甲死亡
B.某乙死亡
C.某甲突发脑梗塞,丧失行为能力
D.某乙因病不能参加诉讼