a5685142 ,你好:
当受力臂和阻力臂等长时,杠杆不省力也不费力 .
猜你喜欢
- 1古汉语中用什么词表示“你我两人”的意思?
- 2who is the man that is reading the book over there
- 3正六面体能不能由两个正四面体合在一起?这样的图形叫不叫正四面体?
- 4英语翻译
- 5一个长方形运动场,长150米,宽80米,在一副比例尺1:250平面图上,这个长方形运动场面积是多少平方厘米?
- 6when you arrived at the university ,did you find it hard to talk with your new classnates
- 7竹子是长在岩石中吗?有没有竹子长在岩石中的.
- 8某冷冻厂的一个冷库的温度是-3摄氏度,现有一批食品需要在-28摄氏度的温度下冷藏 ,
- 9main() { int number; printf("input a number:\n"); scanf("%d",&number); if(number%2==0&&number%3==0
- 10This shirt is too small for me,can you give me___ A.the other B.other C.others C.another