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【单选题】
( )欲使接触器KM1动作后接触器KM2才能动作,需要_________。A.
在KM1的线圈回路中串入KM2的触点
B.
在KM1的线圈回路中串入KM2的常闭触点
C.
在KM2的线圈回路中串入KM1的触点
D.
在KM2的线圈回路中串入KM1的常闭触点
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【简答题】听对话，回答问题。 ( )1.A. Five. ( )2.A. She is a house keeper. ( )3.A. At school. B. Seven. B. She is a cleaner. B. In the hospital. C. Too many to count. C. She is a housewife. C. In a hotel.
【单选题】A. She is disappointed. B. She feels sad. C. She is surprised. D. She is annoyed.
A.
She is disappointed.
B.
She feels sad.
C.
She is surprised.
D.
She is annoyed.
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【简答题】听下面一段材料，回答第1至3题。 1. What is the girl? [ ] A. She is a student. B. She is a worker. C. She is a farmer. 2. What does the girl hope to do in the future? [ ] A. She wants to work as a farmer. B. ...
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