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问题 单项选择题

正常法则下，当所有的保护有效时，AP在哪些情况下会断开：（）

A、大速度保护工作

B、迎角保护工作

C、俯仰姿态大于+25°或-13°，或坡度大于45°

D、方向舵脚蹬偏移超出配平范围10°

E、以上全部

答案

参考答案：E

单项选择题

GIS组合电器外壳采用（）材料。

A.铝合金

B.钢

C.铁

D.铜
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补全对话，情景问答
Choose the best response from A-F in the box according to the sentence given.
A．A dollar, please.                  
C．OK. No problem.                    
E．Shanghai.                          
G．A new CD player.                   
I．She'll go to Beijing for some days 		B．Three years.            
D．January 2nd.          
F．She'll do her homework.                                          
H．How about half past 8?      
J．By bus.           
( )1．What will Wang Ying do after supper?
( )2．What will you buy this Sunday?
( )3．What time will we meet in the zoo tomorrow?
( )4．How will we get there?
( )5．What's Wei Hua's plan for winter holidays?
( )6．Do you know where our English teacher comes from?
( )7．What? We'll have an exam? When?
( )8．It's too hot. Would you please turn on the air-conditioning?
( )9．How long have you studied here?
( )10．I'd like an ice-cream. How much is this?
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