ab
- 在光滑的水平面上,放置一静止的均质直杆AB,当AB上受一力偶m作用时,如图所示,AB将绕()点转动。
- I have apple .
- What’s that? -It’s _apple.
- Whatdoesyourbrotherdo? —Heisuniversitystudent.
- This is apple.
- It is ________ eraser.
- This is film I’ve told you about. Isn’t itwonderful one?——Yes, it’s great.
- This is ___ “h” and that’s ____ “q”.
- This is key and that is eraser.
- This is ruler . ruler is yellow .