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【判断题】
当稳压管二极管在正常稳压工作时,其两端施加的外部电压的特点为 反向偏置且被击穿A.
正确
B.
错误
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【单选题】--Excuse me. Could you tell me to Xi’an Expo? --Take No.231 to get there.
A.
which bus should I take
B.
how far is it
C.
which bus I should take
D.
how far it is
【单选题】—Excuse me．Could you please tell me ? —Certainly．Take the escalator to the second floor and turn left, There is a bank next to the drugstore.
A.
where can I exchange money
B.
where the post office is
C.
which is the way to the bank
D.
how I can get to the restaurant
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