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【单选题】
298K时，下列反应中， 的为( )。A.
B.
C(s)+O 2 (g)====CO 2 (g)
C.
CO 2 (g)+C(s)====2CO(g)
D.
C(s)+H 2 O(g)====CO(g)+H 2 (g)
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反馈参考答案：
举一反三
【简答题】简述活性污泥的组成。
【单选题】As the boy listened attentively in class, everything his teacher said was easily ______. [ ]
A.
for him to understand
B.
understood
C.
to understand
D.
to be understood
【单选题】He apologized ________ late.A．to his teacher to arriveB．to his teacher for arrivingC．at his teac
A.
21. He apologized ________ late. A．to his teacher to arrive
B.
to his teacher for arriving
C.
at his teacher to arrive
D.
at his teacher for arriving
【判断题】在微生物驱油过程中，注入的细菌以及随其进入地层的杂质会造成堵塞效应，特别是细菌生长过快的条件下，油藏被堵可能使渗透率降低20％～70％，而且原油降解现象严重，不利于提高原油采收率。因此，控制细菌生长速度的问题在实际现场应用中就显得尤为重要。
A.
正确
B.
错误
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