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能与饱和NaHSO3溶液呈阳性反应的醛酮有哪些?其加成产物是什么?在此加成产物中加稀酸或稀碱有何现象?此类反应有何实际用途?
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下列程序的运行结果是______。Sub abcd(ByValn As Integer)n=n+5End SubPrivate Sub Form_Click()nx%=3Callabcd(nx%)Printnx%End Sub
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有以下程序includesub1(char a,char B) {char c;c=a;a=b;b=c;}sub2(char *a,char B) {
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p4Ksubm/sub/pE
p5Ksubm/sub/p
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单选题A
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pIsub2/sub=2Isub3/sub/pD
pIsub3/sub=4Isub2/sub/p
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msub0/sub<msube/sub<(xB
msub0/sub=msube/sub=(xC
msub0/sub>msube/sub>(xD
msube/sub<msub0/sub<(x
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