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- 1t摄氏度时,某物质的溶液为200克,蒸发掉10克水后,析出晶体3克,再蒸发掉10克后析出晶体5克,
- 2You'll need to improve more English skills,___ reading and writing ability.
- 3某温度下硫酸铜的溶解度是25克,若温度不变,将32克无水硫酸铜粉末放入...这题 18克的求法我不懂
- 4电能,水力是二级能源吗,煤石油天然气是一级能源吗
- 5声音在空气中的传播速度为340米/秒,合每分钟多少千米?
- 6用简单的英语解释下列句子 1.My sister works as an engineer 2.what's your father's age
- 7While she___(argue)with her sister,her parents came in
- 8Take some medicine and you will be ____soon A.well .B.fine,选哪一个
- 9(急问)如何从效用函数求需求函数?
- 10英语动词的用法,v+to do sth.或 v+doing sth.v具体是那些词?