阳光直射赤道,且有向北移动的倾向,即为春分
阳光直射赤道,且有向南移动的倾向,即为秋分
猜你喜欢
- 1电阻丝每米12欧的多粗
- 2This football game is every interesting.对every interesting提问用什么
- 31.解方程组.
- 4等腰三角形ABC AB=AC ,角BAC=45度,AD垂直BC于D,CE垂直AB于E,AD与EC相交于H,求证AH等于BC.
- 5一般电路对地电阻超过多少欧姆漏电开关会跳闸
- 6一匹布有多少米?
- 7Molly__more time ___ ___ her math.She__ __ __ more exercises
- 8when she saw the photo she always thinks of her mother.这句话对吗
- 9由O Na Si 三种元素组成的化合物的化学式、名称和原子团化合价
- 10已知圆x^2+y^2+x-6y+m=0和直线x+2y-3=0交于P,Q两点且OP垂直于OQ,求圆心及坐标