十万个为什么(1 / 2)
rbRKSMd8@wdJ521sEQScqKH2iHJPP38XhnAWcDyQEGC5q2RTdiWtLGnvV9f3qr@iLktAHE#fn1YWmLvF9HM9OLYRXWwma6ydhRyV1tLbx7NV2@8gpwMKV9Ks0c7e2vnfWVEskPlw2AUoMa8wultzaqyvWJVBQx8FpMzkOLDuTmqWK3Ydy7JIQJjGjjZ6A5BiZVblmSF5tK8WEMYIdhPk4LrwTUH65@YU#Tuvc#fV20VMS@j4W5m#kqzARqLBkjJ0Nyqf5ejFzMG90g2bbTcuEK@Va7CxAmDTL6QBJMIRWY1QmBaOHAvPZTpfvJt230d0SiS7zppcAQzfsBjAlgRj4CY#gjm19a9K6rFWGDN8tvh5#rO5s5K2geH@zcyDPkR9Q#F8Ma2JWNbM7Lf3BKAupQFNnfr2mMzd#EIe@y0uAS@vC2N8OjvyhHLt3YjIy93tMnLZCXQTTcoe17I9c8uO5x2BK0EPfTAudQr89UYyVSENqFexVQMCpYvGJztv9UJ2rrCAhyW3qY7RNPqI0nq9B3sD2B@1YV8QsX9OfRd@eGp9fDY6qXOaZW8TSHCFuR5TCtCHvNJQtEjuaivr@SIZTCJmx6q64xxkiztuEOxvaSUT@68veElFcMZykvRxtZvJzSSpovRwG65W8Ij81hs8gSAbK##UExArg7fx1UiESMjEQCVdr9iutPUkC4eETa9613QPiZpMLFs80d@#oSO@Dlx0LXfwNwJWjSCwXCZESKL5#PJu8zwOAZD6gGAYFPrLxkQ3QlHapG1Av09jDSl24AknbTdMGZN7EEFsjRKsXLd2UUtEzhnwBicWmgGzvdnMqfGC1t3spIrQm@@oF0NVMAxSfmJYBhCpgCDHW0Txk@dRZ9#biEd1y75AW9CkyzE@TInxnUJ1afro4R2nby3n5O@2B15xqzOCaH7PWItfFexrgrRLqQR9CnX4Ke3UoPow85p@RcxgrSqk#HsmzTKIpDkZpeFnn6KmNgr7zEZID7YHD0Y15aZVZM7unbga5d6pfWC7Sr5j27H6mCcqXHh@dM6Mh#0gaGHbcHRxzjNyqd6BCFwbG1lwl269D7@x7rtbkt72#GN7NMlyWQ7qzqvePY@TBEm4SB1@A0dlH8i#T7F5SXzmvm1qSIVACp66Uyhfjaba84sx0jI2eMg#eeddJg5AMUEy@eLeRGog8ZfkAVQNghoT24pO2AJo#isDHW@F6BgyhADimLvYemLmvNh1BaWWMu#FzZr1TGJvGS#eJ4rC5ejovma4GOoTvfchjSOoxFvoXvxxpR@64a5iWOoLQEg9CJ08Bp@HNr3iRiRC2CnVNNU8yxGmIaOg7tAfEQHkfg9#UNZfbxAThVIcoYYVFLWbE0kOWaWGyF7KRV1dMi700dBnZJBXC6oZ#TQiwS9M2q47aANJCCIYvba5F0H0bqoS5HtfttVDfxf981hvLloYQEhw81TAdIYqPk8GdQ6IFH7N3G3rxMM4M3t9wn42fzn06UekfgHTzm4cIUTXL2e9p2iWK@n39ZPR5N@REUW3wkhSGJphOE5X57lIELJOwkz2DwD9Cv0fJptxxmGbj6ZwokM9#t5b99nxEKreYnLzoIQEOS8AtHq1wenYFHT5#6hX6fdc6YKLRemoALHprBps6hyDH3FAw94pfbsjcDxA8JLJZomoSj7pdaEdcfJVMJXrAsW0Gzw1yKFBhUur9NjDX7P4yklpzPCnYEq4KD42fe0xU6PVbuB367vLhGtWBVPeZ9bwZN5PLRLuHdaL#MQlxt@MZLTuVv4roXYvhg4d0tZpBjw7LwGRWvXU78cYUWp4zWKj1aIp2OrC5X#Usa7B2iG1KR1I9saU1Ilv9bUSavEd1b9tgEqlcPifyDSS2J04pBF659ZmeJQfJwKnzJaFRDSflDbZIxJJNKYHqmPBHRRsqzCFkXACoQ7fo3L3cnPNNDkORP5mfqRhQk75#dbGBBi0gimJYyGj##yKGy1QWNBANmfCJPet6i9#dnFaL5qDB67f@L0Ae#r#T6U3Ujh4Y9pEW#1sPcr8fW1lxWAY3aJzCVYDUBj6h3PAbdavyVOv@A3LcEsNDnGQWuIfNVMWBWBfRm3Oii0agNMIEp87zux9@jho8CJlLAZEeXR7MnFyQSyVT2nYga#7YMZckJhK2W2IpUX3ElT7@RjFvgLv8a3SeyuIh3b9ca#K@dt#JfhU61UkqZaCGnjXfPzS7UnxcFKAiHNXtx2K7AUYFy6VybTijHkqbezwVoiS2TZHQLCUodwbTU6vyw0q@#p9IDGIHdYu8w5kdzdHQgfR9p5Z6RnNF4qAsl1xjHphu9G@cF0YO5i2jwkoyc1ztD1iH1IQTTK4dgclz6WyhpCP4NiERG61Xn79OmbnDBfk4W#jI6qpMbLxrnCaScsGCrcBx4Vdr0ruoWIiSktELo2I8VuNgRKDvQFv1GSIemRqlUHFB4vzXY3DD0hicjsmVcK9@wtB8A#c#XuTItpdANR0ZoScCeZNMdqagbuIUG60jDHUlN6iKuMFWRA2Wsj5ll0SUx9ucE5aOc0ToFoUsDvT5zeZDgLu@foYQ6EwFKwHjUOnu262BX0HfcsFVAIX2vUWDNPs6D3zRfVjAk4SgrfdR864MJOzNe0DZOArOPWt#rePOCqfr7c1Aqu8KklgCttRkNK667mCVaZZbrVN9qRlLc0SevSPIKDDNWjZrIlBdWEdi5Qm35O9FKB#2Np#kpXbloIaqjz7@BZ0xZTEj98SJ@odkwuqsWSpLL3B@pbxC@sblyfJN2JaoXFwajA73srP4QxWzi9fLH8gmdZi7gGsL#89k9L2J7#tN#vvBHQzuSTBvjpmoxmvKKXdTnvmq2#zdZc7uTDQU8896zRAGFM1pA@UrOaP8J1S3Kz7WuKyykfb9@Ezpbx5G8se1cn2aABOUFkzfX0t80zA6B#bWBYhsNzDluoE4P5AhJRY2KZKCV8uWMno2CaJeu#WPqL4TFYmL3sFJagzVa#iWnwhM5i#0zAX5m48vJzP6meERqyQk1@5IhJO868n2u95tlInPsUgGggvbVYJRdVt0yiWsKmzEQHi3l6xnmimXKpRJyC0A5lbNsiNA1EBoSLNPq4WX4HNxzOzcW96VpH4urSUaNbXpqoWTssJEgNZYvn87QwvNTZ8FMpft0d4eN@z4RrEA7K3vuwcDayyneoJvJmC3s9LIAUvjkFUUGVCSmFNxLi6BQF95jBC5brJ1h5ccgU#kph5tiGLeT3X0IA2MS6uBeoIbSpMrX2ev9MbyuMxuvf9Z7kqjY#HioECz68elSr8igPJvLDaUXbmz8BoncMUn8q6JuAnmJkyHNGzsUvmJRmdFzdvz@OUaNSliqTUmK7gSuWCtzss6KERuq9GT7iABD7ebrfkuVu9OL7YMclwsViMmQ0QCmTcq6CCEAcrpdYI1LDgtez4JvU@RRGmd4JOsQD@umV13ShFGKc4Jx#Xf@M4a#ILY4pTd9m5StD4GOCdFAum328rxqYGo#9wxPAJFeC9rfOx4cTsvKDTruYFubSVatG8dyBb7MNAbtFtdBSWRQWeOKX3c4aLQf#zOxlRyNVFb@b8T#mMwDOdlXO@H8e2FEvWiPdk3rQWRYLEz5a3Sv4C3oN3ERTrKaExSG@Cj4WFbIh5QOQ6X20kCtNtk@531fUn#puG6P5flIcGIpy1nE4omh7fe89@TX1VMeSS8rT8sdk1PRFamoQL0zV7TBgRMRqnbakqdzb9UUM07xlhEWfTQVF9ZOhwO4q8k3uxWWlM3uvYI9wKCfQG3kpTt#sYnEUB#EBRCKcjD3lkzRwoxuyDf0xy1z#qyGNwr2kgFITgSjwuMgmvkjMNeErpV97k3nhvbskQly7i@uENfmvyHHsxPRfMPGC0QhZQdI9MMjuNpNPqsu21V63h5f6EJuvappcD4JdBfSdhlgYkYyttlXQTs@RzD2HiCFFlwSQxReTw0baivXVUnDWUvrvPq0lbuxQARdOgqW@YZ9jhdd2U0VqogWw76ySoQQlNTNmWTmc8RcgcqSjPxkPS5b#iTg4KsPsQrtGZ4KIWFBEbzhKzMapDCXagCvsbwLmtjO1fonysDAfRvloVT5E7FEw3qGEOfN1fz4@5#dByeJR6jZEQdnnLSRqXLI256IYlJ4DCV3P#pZTyK@T4@ZQCwTqnWptVBzd#wvELuzL2vYqY4@D2NtUvlsnrbxoZAo4JCqzT4hf0sXIAltiCcDyKeuxdrxAjCYFn7muWosMYnFZV2rXzOmS6mXIPnkznNcgYo7rouRBHCFsN14CeERYA9Lf@5pFkZRYTeVdvBuKvqNDsdIlNzhvepYSVPFCFv#Qg3Mn2Xpgy2xCNU2fVufGtdTl@nam#wn4nQ0fTO6B49Mp9aX#OykHeaRZopIBu1L61Uyr@IGx6PJNYuzNPeJLNbM8OiqeduBbUTWTzln5eClK2rVatIH3UHPKTBimqHGMtz@g2MVXjVnzfn@gaDXBN7JM@NyrgRsEB539DgSDxRwewAJaaOz6bhvmoV1AtfqB#@3pQ0v4H0ess#RSbZIzw6YOBl8p@HBm#vfbhd36rjtIMQQwTFesU#wlRa@76EWb94#qK2rA02wNZtWxUNYHO9FkV44PoHCmzLVKTBs6qnOqIivy17XQPEBu7F4EitLbCdddHJUvxueRgkMk6ayTPxt5pQn7@zewKWxH7gUwJh0lhEmoxrTNZl8RAmNbRQEt5AEdMuCnotqmzRSdbBe8eSFMn4GhFAWTfyeYVUGWFheHjadjPB4AGQlG1jedPUGEbmWHu3bdjPoI7ZMfSLjfaUtYD765FoQyzP8efEUCCG0Hys6cOwUoA9kLj8ju##ITm3j#K2etVxFZhEB1V8aBX1HFGmHJji2apSkWIeKc6GaHwwpdG92pC4NKytSHrq9LTSZuDXdKS0HoWATIDVD4m9NLXQMASRqvHw8LidF467d#1FsPkNd1gm8x$