问题
单项选择题
若液压A系统压力失效（）
A.对起落架收放没有影响
B.可以由转换活门供压B系统进行起落架的备用收上和放下
C.正常刹车系统和自动刹车系统将不工作
D.在地面，B系统油量正常，可作动备用转弯电门进行备用前轮转弯
答案
参考答案：D
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若液压A系统压力失效（）
A.对起落架收放没有影响
B.可以由转换活门供压B系统进行起落架的备用收上和放下
C.正常刹车系统和自动刹车系统将不工作
D.在地面，B系统油量正常，可作动备用转弯电门进行备用前轮转弯
参考答案：D
| Choose the correct answers to the questions. 为下列问句选择正确的答语。 |
| ( ) 1. How far is it from Beijing to Shijiazhuang? ( ) 2. Where do you live? ( ) 3. How many lines are there in the picture? ( ) 4. How do you usually go to school? ( ) 5. When do you go to bed in the evening? ( ) 6. Who wants to play a new game? ( ) 7. What's Lingling's favourite food? ( ) 8. How's the weather today? A. I live in Guangzhou. B. I usually go to school on foot. C. Her favourite food is dumplings. D. It's sunny today. E. It's about three hundred kilometres. F. There are three. G. I do. H. At about 10:00. |