You ______her at the beginning, but now it is too

You ______her at the beginning, but now it is too late.(本题3.5分) A、 ought to have

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7、 先达到溶度积Ksp的先沉淀。 ( ) [ 1 分 ]

7、 先达到溶度积Ksp的先沉淀。 ( ) [ 1 分 ]

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当主量子数n=4,共有4s,4p,4d,4f四个原子轨道。 ( ) [ 1 分 ]

当主量子数n=4,共有4s,4p,4d,4f四个原子轨道。 ( ) [ 1 分 ]

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60. I was pleased to hear about your job offer - a

60. I was pleased to hear about your job offer - all that hard work has obvious

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