问题 选择题

做简谐运动的质点在通过平衡位置时,下列物理量中具有最大值的物理量是(   )

A.动能

B.加速度

C.速度

D.位移

答案

AC

质点在通过平衡位置时速度最大,故动能最大.这里讲的位移都是以平衡位置为参考的,故此时位移为零.

阅读理解
阅读理解。
(ENGLISH COACHING PAPER. March 3, 1996) The biggest shopping center will open on March 8.  
Every-body with today's ENGLISH COACHING PAPER will get a small present that day. You are
welcome. Telephone: 3899068; Address: NO. 6 Tonghua Road...
(ENGLSH NEWS PAPFR. March 19) English News Paper needs a foreign editor (编辑).  He (She) 
must have worked in China for more than 2 years.  British nationality (国籍) is necessary. The wages
are $100,000 a year. The term (任期) is 3 years. In ten days this piece of ad will be useless.
Telephone: 3890666; Address: NO. 6 Xinling Road...
(CHINA FOOTBALL, February 3, 1996) Shanghai Shenhua Team VS Beijing Guo'an Team
TIME: February 8, Sunday (3:00)  .
PLACE: Hongkou Stadium
TICKET PRICE: RMB 25 yuan (for adults)  RMB 15 yuan (for students)
NAME: China Cup Football Match
COACHFS: Xu Genbao, Jin Zhiyang...
1. If a reader has an English Coaching Paper of March 3, 1996, he will get a small present _______
A. every day                        
B. from English Coaching Paper
C. on March 19, 1996                
D. on February 3, 1996
2. If a British editor has worked in China for three years and comes to English News Paper office to ask
    for the job on time, he will _______.
A. get the job                            
B. not get the job
C. be a good editor                        
D. be useless
3. Where and when will the football match be?
A. In Guo'an on February 8.
B. In Hongkou Stadium on February 3.
C. In Hongkou Stadium on Sunday.
D. In Shenhua Stadium on February 8.
4. If three adults and six students want to watch the match, the tickets will cost RMB_______ yuan.
A. 195                              
B. 135
C. 225                              
D. 165
5. Which of the following is WRONG?
A. In ten days, the second piece of ad will be useless.
B. The telephone number of English News Paper is 3890666.
C. The match is between Beijing Team and Guo'an Team.
D. Xu Genbao is a coach.
单项选择题 A1型题