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CuSO4+KI
答案:
2CuSO4+4KI=2CuI+I2+2K2SO4
上述完成并配平反应方程式是否正确?
正确答案:正确
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Part I··Structure··(10 minutes)
Directions: This part is to test your ability to construct grammatically correct sentences. It consists of 2sections.
Section A
21. Companies understandably ask: why should I train you_______you'll leave and work for my competitors? A.
A)if
B.
B) unless
C.
C) until
D.
D) although
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PbO2+2H2SO4>2PbO2+O2++
答案:
上述完成并配平反应方程式是否正确?
正确答案:正确
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