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【多选题】
ZD6道岔转换时电流曲线呈锯齿状波动,其原因是( )
A.
滑床板较脏
B.
转辙机摩擦带磨损
C.
电机换向器故障
D.
自动开接点不良
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参考答案:
举一反三
【简答题】计算题:全圆方向观测法的两测回观测结果于下表,请完成记录计算。
【单选题】— What's the hurry? We'd like you to stay for dinner. — ______, but Susan and I have to meet my parents at the airport. [     ]
A.
Well, thank you
B.
Why, I'm sorry
C.
Oh, all right
D.
Ok, that's right
【简答题】阅读短文,选出正确答案 Joan is an American girl. She lives in China now. She is in my class. Her parents work in China, too, but her brother works in the U.S.A. He often writes letters to them. Joan likes Chines...
【简答题】完形填空 I grew up in an ordinary family ,which is not so well off. I could understand the  1   my parents were bearing at that time. __ 2 __,  I work very hard now in the hope of entering the university ...
【单选题】–What a pity! I didn’t attend the lecture given by Dr. Green yesterday. —I _____, either, if my parents hadn’t reminded me.
A.
wouldn’t
B.
hadn’t
C.
didn’t
D.
wouldn’t have
【简答题】填空完成全圆方向法观测(表 2 ) cmim
【简答题】I never thought about the ers of growing up during the war because I was only six then. My parents were 36 and both were busy with their work at a hospital. I was often left in the care of my gran...
【简答题】Frank is my good friend. We are in the same class. He is four, one year older than me. His parents are both teachers in No 7 Middle School. Frank studies hard. His English and math are very good. ...
【简答题】Frank is my good friend. We are in the same class. He is four, one year older than me. His parents are both teachers in No 7 Middle School. Frank studies hard. His English and math are very good. ...
【简答题】At the age of three, I wasdiscovered to be totally deaf. Having consulted many specialists, my parents made a(n) that would forever alter my future. sending me to a special education school for the de...
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