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- 1有含盐20%的盐水50千克,要使盐水含盐率为25%,应蒸发掉多少千克水?
- 2一艘油轮满载时排水量5800吨,它受到得浮力是多少?在码头卸下八乘十的五次方千克的燃料后油轮排开水的体积
- 3My cousin will fly to Shanghai next week.(用last week改写)My cousin____ ____Shanghai last week.
- 4How many books does he buy?He wanted to know.(合成一个句子) He wanted to know how many books__ __
- 5do be careful next time 后反义疑问句是什么?
- 6Miss Li ____as a secretary for five years in the company ,and now she is general manager of it.
- 7曲线y=inx上与x+y=1垂直的切线方程是多少?
- 8张的意思是陈设怎么造句?
- 9Did you hear someone[ ] 【knock】 at the door when you[ ]【 watch】 TV last night.填什么,为什么
- 101立方水等于多少斤