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【单选题】
基态 29 Cu原子的电子构型为A.
1s 2 2s 2 2p 6 3s 2 3p 6 3d 9 4s 2
B.
1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 1
C.
1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 9
D.
1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 3d 10
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反馈参考答案：
举一反三
【简答题】对于商品经济不发达,消费水平不高的国家和地区的理性购买行为,应以________为主题。
【单选题】When you say it is "as plain as the nose on your face" you mean ________.
A.
"it is easy to solve"
B.
"something looks like your nose"
C.
"it is something quite easy to understand"
D.
"there is a plain-looking nose on your face"
【简答题】连词成句. Here's, for, bandage, a, your, nose (.) _____________________________________________
【简答题】follow my nose
【单选题】If your nose starts bleeding, you will _______.
A.
lean back
B.
lean forward first
C.
only pinch your nose
D.
leave it bleeding
【简答题】电话系统所采用的的交换方式为()。
【简答题】看图填空。 ___________ Danny know the ___________ answers? Touch your nose ___________ yes. Touch your ear for ___________.
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