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【单选题】
Ag 2 O 分解可用下面两个计量方程之一表示,其相应的平衡常数也一并列出: Ag 2 O(s) → 2Ag(s)+1/2O 2 Kp(1) 2Ag 2 O(s) → 4Ag(s)+ O 2 Kp(2) , 设气相为理想气体,且已知反应是吸热的,试判断下列结论哪个是正确的:( )A.
Kp(2)=[Kp(1)] 1/2
B.
Kp(2)=Kp(1)
C.
随温度的升高而增大
D.
O 2 气的平衡压力与计量方程的写法无关
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【单选题】呼吸商（RQ=放出的CO 2 量/吸收的O 2 量）可作为描述细胞呼吸过程中氧气供应状态的一种指标。下图是酵母菌氧化分解葡萄糖过程中氧分压与呼吸商的关系，以下叙述正确的是（）
A.
呼吸商越大，细胞有氧呼吸越强，无氧呼吸越弱
B.
b点有氧呼吸强度大于a
C.
为延长水果的保存时间，最好将氧分压调至a点
D.
c点以后细胞呼吸强度不随氧分压变化而变化
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