题目内容

NaHCO3 质子条件式为 [H+]+[H2CO3] = [CO32-]+[OH-] （）

A. 对
B. 错

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Na2CO3 质子条件式为 [HCO3-]+[H+]+[H2CO3] = [OH-] （）

A. 对
B. 错

NH4HCO3 质子条件式为 [H+]+[H2CO3] = [NH3]+[CO32-]+[OH-] （）

A. 对
B. 错

It sounds ______. Many children of his age don’t even know if a number is odd or even.

A. good
B. odd
C. exciting
D. satisfying

The “Wolf Principle” has been advocated by many famous companies inChina, such as Baidu, Huawei and so on. What is “Wolf Principle”?

A. Survival of the Fittes
B. Nature Law
C. Harmony between Man and Nature
D. Living in Groups