%C2%ED%DD%FE %D3%D0%CA%B2%C3%B4%B9%A6%D0%A7%A3%BF
%B8%F9%BA%C55%B7%D6%D6%AE2%B5%C4%D3%D0%C0%ED%BB%AF...
相似问题 %C7%F3%CA%D3%C6%B5%3A%B8%FA%B5%A5%D4%B1%CA%C7%D7%F6%CA%B2%C3%B4%B5%C4 特别推荐
%B3%F5%D6%D0%CA%FD%D1%A7%CC%E2%D4%DA%CF%DF%BD%E2%B...
∠BCD=∠A=90-∠B∠ACB=90°,∠ACD=3∠BCD,则∠BCD=22.5度EC=AB/2=AE,∠A=∠ECA所以∠CED=∠A+∠ECA=2∠A=45度∠...
...6%F7%C1%A2%CF%DC%D6%C6%CA%C7%D2%D4%CA%B2%C3%B4%...
%D6%F7%C1%A2%CF%DC%D6%C6%CA%C7%D2%D4%CA%B2%C3%B4%CE%AA%BB%F9%B4%A1+%D2%D4%CA%B2%C3%B4%CE%AA%BA%CB%D0%C4%A3...
%D2%F2%B9%A4%D7%F7%D0%E8%D2%AA%BC%CC%D0%F8%C1%F4%D3%...
%BA%CB%C7%B1%CD%A7%D3%EB%B7%A8%B9%FA%B5%C4%A1%B0%BF%AD%D0%FD%A1%B1%BA%C5%BA%CB%C7%B1%CD%A7%B1%...
%C6%DF%CF%C2%CA%FD%D1%A7%D1%A7%CF%B0%D3%EB%C6%C0%...
由2X+Y+3Z=23得4X+2Y+6Z=46,式一;由X+4Y+5Z=36得3X+12Y+15Z=108式二.式一+式二=(4X+2Y+6Z)+(3X+12Y+15Z)=7X+...
...1%B3%BE%B0%D2%F4%C0%D6%BD%D0%CA%B2%C3%B4
试听 http://www.tudou.com/programs/view/7ENcwhSp_h4/
...%CF%CA%A6%BD%D0%CA%B2%C3%B4%C3%FB%D7%D6
%CD%F2%C8%D9%B5%DA%B6%FE%D0%A1%D1%A7%B5%C4%C4%C7%B8%F6%C0%CF%CA%A6%BD%D0%CA%B2%C3%B4%C3%FB%D7%D6 我来...
...物中铜的质量分数为( )A.80%B.60%C.40%D.20%
解答:解:假设混合物的质量是100g,设参加反应铜粉的质量为x,因为最终得到的黑色固体物质是氧化铜,且是原混合物的质量一半,所以生成...
梦幻西游法宝
修炼经验一满出升级经验就升级的 希望采纳 谢谢
%B4%F3%BD%C5%D6%B8%D3%D0%BB%D2%D6%B8%BC%D7%D3%D0%D...
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