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4×a×b =4ab 希望能够帮到你，祝你学习进步。
等于4ab 等于4ab 等于4ab 等于4ab 等于4ab 等于4ab 等于4ab
=(a^2十2ab十b^2)^2 =a^4十4a^2b^z b^4
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a、b、c、d 各是： 2、1、7、8。分析过程如下：1、abcd 乘 4，结果还是 四位数，则第一个因数“abcd”的“a”只能是1或2；2、dcba的末尾的a只能是偶数，所以，“a”字是数字2；3、abcd乘4，个位a是2，那么“d”是3或8，再根据dcba最高位的“d”只能是8；4、“b”为单数，而且乘4...
K u b i a k1, M. K. S z y m a n´ s k i1, K. Z˙ e b r u n´ 1, I. S o s z y n´ s k i1, P. R. ... We present new version of the OGLE-II catalog of eclipsing binary stars detected in the Small Magellanic Cloud, based on Diff...
=4ab=ab4=4ba=a4b=b4a=ba4
僕らの前に永遠の白線がある 默默舔舐伤口的日子里,也怀疑过自己的力量,如何才能知晓? 等待的日子里,也萌生过放弃之意。 或许也曾无数次想过放下伸出的双手, 或许也曾无数次想过白线划到这就好; 但最终,下定的决心是: 即使伤痕累累,也要在最前方哭泣; ...
His growth and development were normal except for delayed speech. Intelligence quotient at 4 years of age was normal. Since Klinefelt... Kardon,B Nataline - 《Archives of Pediatrics & Adolescent Medicine》 被引量: 0发表: 1971年 Mosaicism for a small supernumerary ring X chromosome in a ...