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【单选题】
2mol/L甲酸溶液,3.2%电离,求解离常数A.
9.6×
B.
4.8×
C.
1.25×
D.
2.1×
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【简答题】Reading comprehension. John and Bobby joined a wholesale company together just after graduation from college the same Year. Both worked very hard. After several years, however, the boss promoted Bobby...
【单选题】John,together with some of American soldiers who sent to Iraq， killed in a bomb explosion.
A.
were;were
B.
was;was
C.
were;was
D.
was;were
【简答题】已知 A(10,8),B(8,12),AB点的中点是P点,则P点坐标为 .
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