问题
选择题
Do you know if back next week? If he back, please let me know. [ ]
A. he comes ; will come
B. will he come;comes
C. he will come;comes
D. will he come; will come
答案
答案：C
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Do you know if back next week? If he back, please let me know. [ ]
A. he comes ; will come
B. will he come;comes
C. he will come;comes
D. will he come; will come
答案：C
2Z(g)，到达平衡后，Y的体积分数为a%，然后再向容器中通入2 mol Z，保持在恒温恒压下反应，当达到新的平衡时，Y的体积分数为b%。则a与b的关系是