Task 2 1-Listening-2.mp3: Mr. White is m...rown is a ________.
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举一反三
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- 一个质量为\(m\)、半径为\(R\)的均匀圆盘绕过其边缘且与盘垂直的固定轴转动,则圆盘对这个轴的转动惯量为 A: \(\frac{1}{2}mR^2\) B: \(mR^2\) C: \(\frac{3}{2}mR^2\) D: \(2mR^2\) E: \(\frac{2}{3}mR^2\)
内容
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Listening Task 2 A: Good enough. B: Very well. C: I’m having lunch. D: How do you do?
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Listening:Task 2: Listen to the dialogue and fill in the blanks with the information you hear.
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在下列六组量子数中,正确的是① n=3,l= 1,m=-1 ② n = 3,l= 0,m = 0③ n = 2,l= 2 ,m=-1 ④ n = 2, l = 1 ,m = 0 ⑤ n = 2,l = 0,m =-1 ⑥ n= 2,l = 3 , m= 2 A: (1),(2),(4) B: (2),(4),(6) C: (1),(2),(3) D: (1),(3),(5)
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有六组量子数: (1) n=3,l=1,m=-1;(2) n=3,l=0,m=0;(3) n=2,l=2,m=-1;(4) n=2,l=1,m=0;(5) n=2,l=0,m=-1;(6) n=2,l=3,m=2 其中正确的是( )。 A: (1)(3)(5) B: (2)(4)(6) C: (1)(2)(4) D: (1)(2)(3)
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下列各组量子数哪些是不合理的,为什么? (1) n=2,l=1,m=0; (2) n=2,l=2,m=-1; (3) n=3,l=0,m=0; (4) n=3,l=1,m=+1; (5) n=2,l=0,m=-1; (6) n=2,l=3,m=+2