只要干制时间足够长,干制品的水分含量可趋向于0()
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古语:“ 爱子,教之以义方”译文是()
A. “If you love your children, teach them the right path”
B. “Love your children, to teach them the right path”
C. “If you love your children, teach them with the right path”
D. “You love your children, to teach them the right path”
每一个电子都有一定的范围,不允许别的电子进入的力被称为()
一个飞速旋转的东西,转动半径越大转动越慢,转动半径越小转动越快,这被称为()原理