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下列化合物发生SN1反应的速度快慢顺序为()。 ①氯环己烷 ②1-甲基-1-氯环己烷 ③氯甲基环己烷

  • A、①>②>③
  • B、②>①>③
  • C、③>①>②
  • D、③>②>①

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更多 “ 下列化合物发生SN1反应的速度快慢顺序为()。 ①氯环己烷 ②1-甲基-1-氯环己烷 ③氯甲基环己烷A、①>②>③B、②>①>③C、③>①>②D、③>②>①” 相关考题
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考题 下列程序用来计算1+2+…n,当和大于100时停止计算,请填空。Private Sub Form_Click()Dim n as integer,s as integer,I as integer,k as integers=0k=0n=inputbox(″请输入n的值)For i=1 to 100k=k+1s=s+I【 】Next iPrint sEnd Sub

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考题 在窗体中添加一个命令按钮,编写如下程序: Private Sub Subl(p,m,n) p=p+1:m=m+1:n=n+1 Print"subl:";p;m;n End Sub Private Sub Command1_Click() al=1:b=2:c1=3 Call Subl(a,b1+3,c1) Print"Main:";a1;b1;c1 End Sub 程序运行后,输出结果为A.Sub:2 6 4 Main:2 6 4B.Sub:2 6 4 Main:2 6 4C.Sub:2 6 4 Main:1 2 3D.Sub:2 6 4 Main:2 2 3

考题 有如下程序 Private Sub Command1_Chck( ) s=0 DO s=(s+1) *(s+2) N=N+1 Loop Until s>=10 Prim N;s End Sub 运行后的输出结果是A.0 1B.30 30C.4 30D.2 12

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