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问题 单项选择题

液压系统油量表上的RF符号何时出现？（）

A.当各自液压系统的油量低于88％时，自动显示

B.一直显示

C.当相应系统液压油量低于76％，且飞机在地面两台发动机都关车或着陆后襟翼收上滑行过程中

D.只在主警告系统呼叫时显示

答案

参考答案：C

填空题

客运站有（）和（）两种基本类型。
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B
SPECIAL EVENTS THIS WEEKEND
Captain Goodfellow
Do your children enjoy interesting stories, funny games, and exciting dances? Captain Goodfellow will be ready to teach all these things to children of all ages at the City Theatre on Saturday at 17:00, FREE.
Walking Tour of the Town
    Forget your worries on Saturday morning. Take a beautiful walk and learn about local history. Meet at the front entrance of the City Hall at 9:30. Wear comfortable shoes!
Film at the Museum
Two European films will be shown on Saturday afternoon at the Museum Theatre.
See Broken Window at 1:30. The Workers will be at 3:45. For further information, call 4987898.
Do You Want to Hear “The Zoo”
“The Zoo”, a popular rock group from Australia, will give their first US concert tomorrow at 20:00 at Rose Hall, City College.
61. You can send your children to Captain Goodfellow to learn dances _______.
A. at 5:00 a.m. on Saturday                 B. at 9:30 on Saturday morning
C. on Saturday afternoon                            D. every day except Saturday if you pay
62. If you are going on the Walking Tour, don’t forget _______.
A. your worries                                          B. your beautiful walk
C. the local history                      D. your pleasant shoes
63. “The Zoo” is ______.
A. a park with lots of animals          B. a famous concert
C. a musical band                          D. the first group to US
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