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- 2性格的形容词有哪些
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- 4怎样检验硫酸根离子、氯离子、二价铁离子、三价铁离子、氨根离子?
- 5___the bridge were packed with cars, it could still carry three times the load.
- 6在△ABC中,∠BAC=90°,∠C=30°,AD⊥BC于D,BE平分∠ABC,与AD相交于点F.求证:△AFE是等边三角形.
- 7Protect Hope is an organization that______(help)children go to school.
- 8过氧乙酸用途
- 9现有95%乙醇500ml,要配制70%乙醇,需加入多少灭菌馏水
- 10lim((n^2一2n)/(n^2十1))^n中n到∞的极限