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【单选题】
当线圈中的磁通量发生变化时,则( )
A.
线圈中一定有感应电流
B.
线圈中一定有感应电动势
C.
感应电动势的大小与磁通量成正比
D.
感应电动势的大小与导线的电阻有关
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A.
小刚的妈妈经常检查他的作业和日记本
B.
课间休息时教师王某在教室外面的走廊抽烟
C.
教师刘某让没有正确回答问题的学生站着听课
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教师李某课堂上让未掌握投篮动作的学生反复练习
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A.
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B.
The 2:30 train has a dining room.
C.
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D.
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A.
balance its budget for research into cures and that into therapies that can help people live healthier and happier lives
B.
stop paying for medical care that sustains life beyond age 83 so that younger and healthier people can realize their potential
C.
make it a rule that people in industry, academia and government who are over 55 should retire
D.
spend less on health and more on housing, defense and education
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A.
by
B.
in
C.
of
D.
to
【单选题】下列做法中,没有违反相关法律规定的是 ( )
A.
小刚的妈妈经常检查他的作业和日记本
B.
课间休息时教师王某在教师外面的走廊抽烟
C.
教师刘某让没有正确回答问题的学生站着听课
D.
教师李某课堂上让未掌握投篮动作的学生反复练习
【单选题】下列做法中,没有违反相关法律规定的是( )
A.
小刚的妈妈经常检查他的作业和日记本
B.
课间休息时教师王某在教师外面的走廊抽烟
C.
教师刘某让没有正确回答问题的学生站着听课
D.
教师李某课堂上让未掌握投篮动作的反复练习
【单选题】听力原文:M: There is a non-stop train for Washington and it leaves at 2: 30. W: It's faster than the 2 o'clock train. Besides, we can have something to eat before getting on the train. Q: What do we learn...
A.
The 2:00 train will arrive earlier.
B.
The 2:30 train has a dining car.
C.
The woman prefers to take the 2:30 train.
D.
They are going to have some fast food on the train.
【单选题】下列做法中,没有违反相关法律规定的是
A.
小刚的妈妈经常检查他的作业和日记本
B.
课间休息时教师王某在教室外面的走廊抽烟
C.
教师刘某止没有正确回答问题的学生站着听课
D.
教师李某课堂上让未掌握投篮动作的学生反复练习
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