题目内容
V带传动的最大有效拉力Fec与（ ）有关。
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提高V带传动工作能力的合理措施为（ ）。
链传动张紧的主要目的是（ ）。
若V带传动的几何参数不变，仅把带速提高到原来的2倍，则V带所能传动的功率将怎么变化？（ ）。
Fill int the blanks with the expressions given below. Change the form where necessary. Each expression can be used only once.1. I a letter of complaint to the manager of the store as soon as I found they sold me a pair of mismatched shoes.2. People browse the Internet, read newspapers and watch TV to what is happening in the world.3. The university another large laboratory for students to design more complicated robots.4. I find it very difficult to the fact that two of our best students failed the exam.5. In the current economy, with unemployment high and competition for jobs fierce, your resume need to for all the right reasons.6. She is getting popular since she appeared in a TV interview last month. Her new movie will no doubt her growing fame.7. The developed countries should in reducing greenhouse gas emissions and provide support for developing nations to follow.8. If your spoken English is not very good, then you may bewhen you are looking for a job.9. Their success was due their well-conceived plan.10. He has been so occupied with his work these days that he barely has time to his friends.
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