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- 1分析理解下列现象
- 2for help 中的help
- 3Apples of this kind______.
- 4The boy is my brother who is on the bike.
- 5100℃时硝酸钾的不饱和溶液与20℃时硝酸钾饱和溶液相比
- 6一块质量M.倾角为@的木块,静置在水平桌面上,与桌面间的动摩因数为u.质量为m物块与斜面的接触是光滑的,为了保持物块相对斜面静止,可用一水平力F推木块,求此水平力F的大小?(不计空气阻力)
- 7my father works a_____ doctor in a hospital.
- 8Which is the ____(old)temple in your city?
- 9将They had a good time last night改成一般疑问句,
- 10一台收录机的原价是240元,实际以180元售出,是打几折出售的?