机械在稳定运转时期,在一个运动循环周期的始末,驱动功和阻抗功的大小()。
参考答案:相等
单词拼写。
1. The _____ (统计数字) about the number of motorcycle accidents of last year is quite shocking.
2. Stay in the shade. Don't get _____ (晒黑的).
3. This is the cause for which we have been _____ (奋斗).
4. But a _____ (十年) later, the situation would be very different.
5. I've discovered a _____ (超级的) restaurant near here!
6. The average _____ (产量) of the factory is 20 cars a day.
7. I am _____ (渴望) for a long vacation.
8. I really hate to complain, but one thing is really _____ (令人不安的) now.
9. Metals _____ (使变大;伸展) when they are heated.
10. Please fill in your _____ (国籍) in this blank.
保证设计项目质量,完成各设计阶段的工作任务是( )的主要责任。
A.发包人
B.投资者
C.施工者
D.设计人