问题
单项选择题
How should the number 6 be pronounced when spoken on the radiotelephone?（）.
A.SOX-SIX
B.NUM-BER-SIX
C.SOK-SEE-SIX
D.NEW-MER-AL-SIX
答案
参考答案：C
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How should the number 6 be pronounced when spoken on the radiotelephone?（）.
A.SOX-SIX
B.NUM-BER-SIX
C.SOK-SEE-SIX
D.NEW-MER-AL-SIX
参考答案：C
Sn2+ (aq)+Pb(s) △H<0，体系中c(Pb2+ )和c(Sn2+)的变化关系如图所示。下列判断正确的是 