• 2022-07-24 问题

    采样周期为5/3(ms)时,三点采样值乘积算法的时间窗为()。 A: 10/3ms B: 1(ms) C: 2(ms) D: 4(ms)

    采样周期为5/3(ms)时,三点采样值乘积算法的时间窗为()。 A: 10/3ms B: 1(ms) C: 2(ms) D: 4(ms)

  • 2022-06-05 问题

    下列各组量子数中,合理的一组是( ) A: n = 4, l = 2, ml = +3, ms = −1/2 B: n = 4, l = 5, ml = −1, ms = +1/2 C: n = 3, l = 1, ml = +1, ms = +1/2 D: n = 3, l = 3, ml = +1, ms = −1/2

    下列各组量子数中,合理的一组是( ) A: n = 4, l = 2, ml = +3, ms = −1/2 B: n = 4, l = 5, ml = −1, ms = +1/2 C: n = 3, l = 1, ml = +1, ms = +1/2 D: n = 3, l = 3, ml = +1, ms = −1/2

  • 2022-06-05 问题

    下列各组量子数合理的一组是()。 A: n=4,L=5,mL=-1,mS=+1/2 B: n=3,L=1,mL=+1,mS=+1/2 C: n=3,L=3,mL=+1,mS=-l/2 D: n=4,L=2,mL=+3,mS=-1/2

    下列各组量子数合理的一组是()。 A: n=4,L=5,mL=-1,mS=+1/2 B: n=3,L=1,mL=+1,mS=+1/2 C: n=3,L=3,mL=+1,mS=-l/2 D: n=4,L=2,mL=+3,mS=-1/2

  • 2022-06-05 问题

    下列各组量子数中,合理的一组是( ) A: n = 3, l = 1, m = -1, ms = +1/2 B: n = 4, l = 5, m = -1, ms = +1/2 C: n = 3, l = 3, m = +1, ms = -1/2 D: n = 4, l = 2, m = +3, ms = -1/2

    下列各组量子数中,合理的一组是( ) A: n = 3, l = 1, m = -1, ms = +1/2 B: n = 4, l = 5, m = -1, ms = +1/2 C: n = 3, l = 3, m = +1, ms = -1/2 D: n = 4, l = 2, m = +3, ms = -1/2

  • 2021-04-14 问题

    写出下列各种情况的合理量子数。 (1)n = ,l = 2, m = 0, ms = +1/2 (2)n = 3,l = ,m = 1,ms = -1/2 (3)n = 4,l = 3,m = 0,ms = (4)n = 2,l = 0,m = ,ms = +1/2 (5)n = 1,l = ,m = 0 ,ms =

    写出下列各种情况的合理量子数。 (1)n = ,l = 2, m = 0, ms = +1/2 (2)n = 3,l = ,m = 1,ms = -1/2 (3)n = 4,l = 3,m = 0,ms = (4)n = 2,l = 0,m = ,ms = +1/2 (5)n = 1,l = ,m = 0 ,ms =

  • 2022-07-01 问题

    下列各组用四个量子数来描述核外电子的运动状态,哪些是合理的?哪些是不合理的?并说明理由。(1)n=2 l=1 m=0 ms=+12(2)n=3 l=3 m=2 ms=-12(3)n=3 l=2 m=2 ms=+12(4)n=4 l=2 m=3 ms=+12(5)n=2 l=1 m=1 ms=-1

    下列各组用四个量子数来描述核外电子的运动状态,哪些是合理的?哪些是不合理的?并说明理由。(1)n=2 l=1 m=0 ms=+12(2)n=3 l=3 m=2 ms=-12(3)n=3 l=2 m=2 ms=+12(4)n=4 l=2 m=3 ms=+12(5)n=2 l=1 m=1 ms=-1

  • 2022-06-19 问题

    三相半波整流平均失控时间为( )ms。 A: 3.33 B: 3 C: 5 D: 10

    三相半波整流平均失控时间为( )ms。 A: 3.33 B: 3 C: 5 D: 10

  • 2022-06-28 问题

    下列各组量子数中,合理的一组是 A: n = 3, l = 1, ml = +1, ms = +[img=9x43]18032eb49b44ef4.png[/img] B: n = 4, l = 5, ml = -1, ms = +[img=9x43]18032eb49b44ef4.png[/img] C: n = 3, l = 3, ml = +1, ms = - [img=9x43]18032eb49b44ef4.png[/img] D: n = 4, l = 2, ml = +3, ms = - [img=9x43]18032eb49b44ef4.png[/img]

    下列各组量子数中,合理的一组是 A: n = 3, l = 1, ml = +1, ms = +[img=9x43]18032eb49b44ef4.png[/img] B: n = 4, l = 5, ml = -1, ms = +[img=9x43]18032eb49b44ef4.png[/img] C: n = 3, l = 3, ml = +1, ms = - [img=9x43]18032eb49b44ef4.png[/img] D: n = 4, l = 2, ml = +3, ms = - [img=9x43]18032eb49b44ef4.png[/img]

  • 2022-06-05 问题

    下列各组量子数中,合理的一组是 未知类型:{'options': ['n = 3, l = 1, ml = +1, ms = +[img=9x43]17de8f0cb497797.png[/img]', 'n = 4, l = 5, ml = -1, ms = +[img=9x43]17de8f0cb497797.png[/img]', 'n = 3, l = 3, ml = +1, ms = - [img=9x43]17de8f0cb497797.png[/img]', 'n = 4, l = 2, ml = +3, ms = - [img=9x43]17de8f0cb497797.png[/img]'], 'type': 102}

    下列各组量子数中,合理的一组是 未知类型:{'options': ['n = 3, l = 1, ml = +1, ms = +[img=9x43]17de8f0cb497797.png[/img]', 'n = 4, l = 5, ml = -1, ms = +[img=9x43]17de8f0cb497797.png[/img]', 'n = 3, l = 3, ml = +1, ms = - [img=9x43]17de8f0cb497797.png[/img]', 'n = 4, l = 2, ml = +3, ms = - [img=9x43]17de8f0cb497797.png[/img]'], 'type': 102}

  • 2022-07-01 问题

    对于n=5,l=3的电子,ms值允许是多少?<br/>( ) A: 1 B: 2 C: 3 D: 1/2

    对于n=5,l=3的电子,ms值允许是多少?<br/>( ) A: 1 B: 2 C: 3 D: 1/2

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