猜你喜欢
- 1after it/what seems to be a long time,he came up.
- 2举重运动员在2s内把1500N的杠铃匀速举高了2m,在空中停留了3s.那么,他对杠铃做了 _J的功,前2s内的功率是 _W;后3s内的功率是 _W;整个过程的平均功率是 _W.
- 3After a long vacation in summer,we returned to school in early f____(填空)
- 4学校有足球20个,比篮球的1/4多5个,学校有篮球多少个
- 5waiting for
- 61杯300克的糖水,含糖率为20%,再加20克水,求此时糖水的浓度是多少?
- 7---How many apples are there on the table?
- 8Tom is ___that he can't go to school.
- 9请问日本主要城市的英文名称?
- 10化学反应速率和化学平衡应用题