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证明：若p^2+q^2=2,则p+q 证明：若p2+q2=2,则p+q≤2 1.证明：若p^2.q^2=2,则p+q 怎样看电阻上条纹确定他的电阻值 培养果蝇的瓶内总是发霉该如何改进? 把果蝇封在一个地方,如果留个小洞,果蝇能不能瞄准小洞飞出去? That's all right和all right在交际用语的区别? right在情景交际中的短语及翻译 China is a ______ socialist country.A. power B. developed C. powerful D. powerless “爱人民”教育是指什么 有关“tobacco and society”的英语文章烟草与社会各方面之间的关系,如健康、经济、环境……等.越详细越好.主要是烟草与社会的关系，而非烟草对个人的危害。 don't response to any e-mails ___personal information,no matter how offical they looka to use b to be used c to have used d to be using Don't respond to any e-mails ( )personal information,no matter how official they look.A searchingDon't respond to any e-mails ( )personal information,no matter how official they look.A searching B asking C requesting D questioning 为什么选C?那B Don’t respond to any e-mails ______ personal information,no matter how official they look.A.requDon’t respond to any e-mails ______ personal information,no matter how official they look.A.requested\x05\x05\x05\x05\x05\x05\x05B.request\x05\x05C.re Don’t respond to any e-mails ________ personal information,no matter how official they look．拜A.searching B.asking C.requesting D.questioning Don’t respond to any e-mails personal information,no matter how official they look.A.requested B.request C.requesting D.to be requested lexi belle翻译成中文名字是什么? 治世不一道,便国不法古.代表了当时哪个阶级的利益. 治世不一道,便国不法古.有什么历史影响 完全不明白用法work in work on work at work from. 哪一个正确啊work in hotelwork on hotel work at hotel work from hotel 有什么不同吗,还是意思都一要,乱用就行了. 填空吧, 再问一遍,tobacco是不是可数名词.不会的别来捣乱行吗.捣乱的举报.英语 My hometown is---------.There is------.There is----------.I love it!空出该填什么? It's () hot.为什么要用really 而不用real it was a really unforgettable vacation.这句话为什么要用really 而不是real 准线有什么意义?我刚复习到椭圆与双曲线,里面有准线的定义,它的图象是Y or X=+/- a平方/c,但我不理解数学设置准线这个概念有何实际意义呢?是怎样定义的? ownership interest什么意思? 是真的是be real 还是be really VCO与VFO有何区别? be 贴切的翻译是什么? 8250时钟电路供电电压VCO（ ）如题 为什么He gave a book to me 谓语只是 give 没有to 那He put some eggs into the basket 谓语是put into