浓民 春芽
共回答了27个问题采纳率:92.6% 举报
1年前
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有四个容量都为500毫升的瓶子,分别装满海水、纯水、酒精和汽油,那么装的质量最多的是(ρ海水>ρ纯水>ρ酒精>ρ汽油)( )
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After John had been in London for three years, he and his wife had a lot to tell ________.
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He knows so much about Russia that he's universally acknowledged as a(n) _____ on Russian affairs.
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1.函数f(x)=sinxcosx的最小值=? 2.函数f(x)=sinx+sin(2x+π/2)的最大值=?
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