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【单选题】
以光电子的最大初动能 为纵坐标，入射光子的频率v为横坐标，可测得E、v的关系是一直线.该直线的斜率以及该直线与横轴的截距分别是（）A.
红限频率v 0 和遏止电压U 0
B.
普朗克常量h与红限频率v 0
C.
普朗克常量h与遏止电压U 0
D.
斜率无意义，截距是红限频率v 0
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举一反三
【单选题】-I can’t go with you today. There will be a test tomorrow. - . Maybe next time.
A.
It doesn’t matter
B.
My pleasure
C.
I don’t think so
D.
Excuse me
【单选题】-I can’t go with you today. There will be a test tomorrow. - ______. Maybe next time.
A.
It doesn't matter
B.
My pleasure
C.
I don’t think so
D.
You are welcome
【单选题】—I can’t go with you today. There will be a test tomorrow. — . Maybe next time. A. C. cuse me
A.
It doesn’t matter
B.
My pleasure
C.
I don ’ t think so
D.
Excuse me
【单选题】— I can’t go with you today. There will be a test tomorrow. — . Maybe next time.
A.
My pleasure
B.
I don't think so
C.
Excuse me
D.
It doesn't matter
【单选题】— I can’t go with you today. There will be a test tomorrow. — ______. Maybe next time.
A.
It doesn’t matter
B.
My pleasure
C.
I don’t think so
D.
Sorry to hear that
【单选题】—Today I can't go with you. There will be an English test tomorrow. —_______. Maybe next time. [ ]
A.
It doesn't matter.
B.
My pleasure.
C.
I don't think so
D.
Sorry to hear that.
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