问题
填空题
相位滞后校正装置又称为()调节器,其校正作用是利用G(s)的负斜率使ωC减小,改善静态性能。
答案
参考答案:P-Ⅰ
相位滞后校正装置又称为()调节器,其校正作用是利用G(s)的负斜率使ωC减小,改善静态性能。
参考答案:P-Ⅰ
完形填空。 |
I am going to have a party tomorrow night. I promised my mother that she needn't do 1 for me. My friend Jane is 2 , too. She would like to help me, but she can't, 3 she has a piano lesson in the morning and in the afternoon she has to babysit her sister. So I will do everything by 4 . I try to make the party a nice one. I sent invitations to my friends 5 . Now I am thinking about what I need to do tomorrow. Yes! I am going to 6 some food, drinks and some fruit. I am going to make a shopping list 7 I go. I also have to decorate (装饰) the room. I need to do so many things. So I 8 watch my favorite talk show after lunch. What a pity! The party begins 9 7:00 pm. So I must have my dinner 10 , because I am tired after I finish doing so many things and after dinner I can have a short rest. |
( )1. A. something ( )2. A. going ( )3. A. because ( )4. A. me ( )5. A. yesterday ( )6. A. take ( )7. A. after ( )8. A. can ( )9. A. at ( )10. A. late | B. anything B. back B. though B. myself B. tomorrow B. sell B.when B. not B. in B. early | C. nothing C. coming C. but C. her C. at once C. buy C. how C. can't C. on C. short | D. everything D. here D. and D. herself D. soon D. ring D. before D. never D. with D. quick |