问题
填空题
力的平移定理和力的可传性原理只适用于()。
答案
参考答案:刚体
力的平移定理和力的可传性原理只适用于()。
参考答案:刚体
从II 栏中选出能对I栏中的句子做出正确回答的答句。 |
I ( )1. Does Jim swim slower than David? ( )2. What' s wrong with you? ( )3. Can I have an apple ? ( )4. How many birds can you see? ( )5. Let's go swimming this afternoon. ( )6. Whose wallets are they? ( )7. Your skirt is so beautiful. ( )8. Did you have a party last night? | II A. They' re theirs. B. Sure, here you are. C. Thank you. D. I'm hungry. E. Great! F. I can see seven. G. Yes, we did. H. No, he doesn't. |