题干

电饭煲、电水壶和电熨斗分别标有“220V 1000W”、“220V 1800W”和“220V 500W”的字样,它们各自正常工作相同时间,____ (选填“电饭煲”、“电水壶”或“电熨斗”)产生的热量最多.标有“220V 1000W”的电饭煲正常工作0.2h,电流所做的功为____ kW•h=____ J.

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答案(点此获取答案解析)

电水壶,0.2,7.2×105

同类题2

阅读下面的古诗文,完成小题。

(甲)

    安世仪状魁硕,音吐如钟。初除谏官,未拜命,入白母曰:“朝廷不以安世不肖,使在言路。倘居其官,须明目张胆,以身任责,脱有触忤,祸谴立至。主上方以孝治天下,若以老母辞,当可免。”母曰:“不然,吾闻谏官为天子诤臣,汝父平生欲为之而弗得,汝幸居此地,当捐身以报国恩。正得罪流放,无问远近,吾当从汝所之。”于是受命。在职累岁,正色立朝,扶持公道。其面折廷争,或帝盛怒,则执简却立,伺怒稍解,复前抗辞。旁侍者远观,蓄缩悚汗,目之曰“殿上虎”,一时无不敬慑。

(乙)

    至成帝时,故丞相安昌侯张禹以帝师位特进,甚尊重。(朱)云上书求见,公卿在前,云曰:“今朝廷大臣,上不能匡主,下亡以益民,皆尸位素餐,孔子所谓'鄙夫不可与事君,苟患失之,亡所不至'者也。臣愿赐尚方斩马剑,断佞臣一人,以厉其余。”上问:“谁也?”对曰:“安昌侯张禹!”上大怒,曰:“小臣居下讪上,廷辱师傅,罪死不赦!”御史将云下。云攀殿槛,槛折。云呼曰:“臣得以从龙逢、比干游地下,足矣!未知圣朝何如耳。”御史遂将云去。于是左将军辛庆忌免冠解印绶,叩头殿下,曰:“此臣素著狂直于世,使其言是不可诛其言非固当容之臣敢以死争。”庆忌叩头流血。上意解,然后得已。及后当治槛,上曰:“勿易,因而辑之,以旌直臣。

同类题3

阅读短文,从每题所给的四个选项(A、B、C、和D)中,选出最佳选项.

        Salvador Dali (1904-1989) was one of the most popular of modern artists. The Pompidou Centre in Paris is showing its respect and admiration for the artist and his powerful personality with an exhibition bringing together over 200 paintings, sculptures, drawings and more. Among the works and masterworks on exhibition the visitor will find the best pieces, most importantly The Persistence of Memory. There is also L’Enigme sans Fin from 1938, works on paper, objects, and projects for stage and screen and selected parts from television programmes reflecting the artist's showman qualities.

        The visitor will enter the World of Dali through an egg and is met with the beginning, the world of birth. The exhibition follows a path of time and subject with the visitor exiting through the brain.

        The exhibition shows how Dali draws the viewer between two infinities (无限). “From the infinity small to the infinity large, contraction and expansion coming in and out of focus: amazing Flemish accuracy and the showy Baroque of old painting that he used in his museum-theatre in Figueras,” explains the Pompidou Centre.

        The fine selection of the major works was done in close collaboration (合作)with the Museo Nacional Reina Sofia in Madrid, Spain, and with contributions from other institutions like the Salvador Dali Museum in St. Petersburg, Florida.