题干

两电阻串连接在电压恒定的电源上,用两只精度都很高的不同的电压表分别去测量同一电阻两端的电压,甲表测得示数为10.1V,乙表测得示数为10.3V,则可知(   )

A:乙表示数比甲表示数更接近该电阻两端原来的电压

B:甲表内阻比乙表内阻大

C:该电阻两端原来电压必小于10.1V

D:该电阻两端原来电压必在10.1V和10.3V之间

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答案(点此获取答案解析)

A

同类题4

阅读理解

    The iPhone, the iPad: each of Apple's products sounds cool and has become a fashion. Apple has cleverly taken advantage of the power of the letter “i” --- and many other brands are following suit. The BBC's iPlayer --- which allows Web users to watch TV programs on the Internet ---used the title in 2015. A lovely bear --- popular in the US and UK --- that plays music and video is called “iTeddy”. A slimmed-down version(简装本) of London's Independent newspaper was started last week under the name “i”.

    In general, single-letter prefixes(前缀) have been popular since the 1990s, when terms like e-mail first came into use.

    Most “i” products are aimed at young people and considering the major readers of independent's “i”, it's no surprise that they've selected this fashionable name.

    But it's hard to see what's so special about the letter “i”. Why not use “a”, “b”, or “c” instead? According to Tony Thorne, head of the Language Center at King's College, London, “i” works because its meaning has become ambiguous. When Apple uses “i”, no one knows whether it means Internet, information, individual or interactive, Thorne told BBC Magazines. “Even when Apple created the iPod, it seems it didn't have one clear definition,” he says.

    “However, thanks to Apple, the term is now connected with portability (轻便) .”adds Thorne.

    ※Clearly the letter “i” also agrees with the idea that the Western World is centered on the individual. Each person believes they have their own needs, and we love personalized products for this reason.

    Along with “Google” and “Microblog”, readers of BBC Magazines voted “i” as one of the top 20 words that have come to define the last ten years.

    But as history shows, people grow tired of fashions. From the 1900s to 1990s, products with “2000” in their names became fashionable as the year was connected with all things advanced and modern. However, as we entered the new century, the fashion disappeared.

同类题5

阅读以下文言文,回答问题。

公输

       子墨子起,再拜,曰:“请说之。吾从北方闻子为梯,将以攻宋。宋何罪之有?荆国有余于地,而不足于民,杀所不足而争所有余,不可谓智;宋无罪而攻之,不可谓仁;知而不争,不可谓忠;争而不得,不可谓强;义不杀少而杀众,不可谓知类。”

       公输盘服。

       ……

       子墨子见王,曰:“今有人于此,舍其文轩,邻有敝舆而欲窃之;舍其锦绣,邻有短褐而欲窃之;舍其粱肉,邻有糠糟而欲窃之。此为何若人?”

       王曰:“必为有窃疾矣。”

       子墨子曰:“荆之地方五千里,宋之地方五百里,此犹文轩之与敝舆也。荆有云梦,犀兕麋鹿满之,江汉之鱼鳖鼋鼍为天下富,宋所谓无雉兔鲋鱼者也,此犹粱肉之与糠糟也。荆有长松文梓楩楠豫章,宋无长木,此犹锦绣之与短褐也。臣以王吏之攻宋也,为与此同类。”

王曰:“善哉!虽然,公输盘为我为云梯,必取宋。”

       于是见公输盘。子墨子解带为城,以牒为械,公输盘九设攻城之机变,子墨子九距之。公输盘之攻械尽,子墨子之守圉有余。

       公输盘诎,而曰:“吾知所以距子矣,吾不言。”

       子墨子亦曰:“吾知子之所以距我,吾不言。”

       楚王问其故。子墨子曰:“公输子之意,不过欲杀臣。杀臣,宋莫能守,乃可攻也。然臣之弟子禽滑厘等三百人,已持臣守圉之器在宋城上而待楚寇矣。虽杀臣,不能绝也。”

       楚王曰:“善哉。吾请无攻宋矣。”