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I．1100℃时，在恒容密闭容器中，发生如下可逆反应： Na 2 SO 4 (s)+4H 2 (g) Na 2 S(s)+4H 2 O(g)，并达到平衡。请完成下列各题： (1)达到平衡时的平衡常数表达式：K=________；降低温度，K值减小，则正反应为_________（填“吸热”或“放热”）反应。 (2)向该容器中分别加入以下物质，对平衡的影响如何？ ①加入少量Na 2 SO 4 ，则平衡____________（填所选字母，下同）； ②加入少量灼热的Fe 3 O 4 ，则平衡_____________。 a.正向移动  b．逆向移动  c．不发生移动 Ⅱ．将CH 4 设计成燃料电池，其利用率更高，装置示意如图 (A、B为多孔性碳棒)，持续通入甲烷，在标准状况下，消耗甲烷体积VL。 (1)0 (2)44.8 L (3)V =67.2 L时，溶液中阴离子浓度大小关系为________________
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参考答案：
举一反三
【判断题】一般空腹全血血糖为0-6.1mmol/L
A.
正确
B.
错误
查看完整题目与答案
【简答题】填空：After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll(死亡人数) could have been much worse. More than 60 people died in t...
查看完整题目与答案
【单选题】患者,男,32岁。反复发热、腹泻2月,经实验室检查“抗HIV阳性”,初步诊断为“艾滋病”。护士对患者进行健康史评估时,下列内容中最不重要的是
A.
有无输血史
B.
有无静脉吸毒史
C.
有无吸食大麻史
D.
妻子有无艾滋病
E.
有无不洁性行为史
查看完整题目与答案
【单选题】两根细长杆,直径、约束均相同,但材料不同,且它们的弹性模量之比为 E 1 : E 2 =2 ,则两杆临界应力的关系为:
A.
( σ cr ) 1 =( σ cr ) 2
B.
( σ cr ) 1 =2( σ cr ) 2
C.
( σ cr ) 1 =( σ cr ) 2 /2
D.
( σ cr ) 1 =3( σ cr ) 2
查看完整题目与答案
【单选题】炭粒廓清试验常用来检测
A.
中性粒细胞功能
B.
巨噬细胞功能
C.
NK细胞功能
D.
B细胞功能
E.
T细胞功能
查看完整题目与答案
【简答题】Passage Three After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had news to report: The damage and death toll could have been much worse. More than 60 people died in t...
查看完整题目与答案
【单选题】两根细长杆，直径、约束均相同，但材料不同，且E 1 =2E 2 则两杆临界应力的关系为(    )。
A.
(σ cr ) 1 =(σ cr ) 2
B.
(σ cr ) 1 =2(σ cr ) 2
C.
D.
(σ cr ) 1 =3(σ cr ) 2
查看完整题目与答案
【单选题】As the life they were used to _____ changed by the terrible earthquake, the people in the earthquake-stricken area are doing all they can ______ their new life.
A.
have now been, build
B.
having now been, to build
C.
has now been, to build
D.
is now, build
查看完整题目与答案
【单选题】After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: the damage and death toll could have been much worse. More than 60 people died in this earth...
A.
new computers had been installed in the buildings
B.
it occurred in the residential areas rather than on the highways
C.
large numbers of Los Angeles residents had gone for a holiday
D.
improvements had been made in the construction of buildings and highways
查看完整题目与答案
【单选题】After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: the damage and death toll could have been much worse. More than 60 people died in this earth...
A.
new computers had been installed in the buildings
B.
it occurred in the residential areas rather than on the highways
C.
large numbers of Los Angeles residents had gone for a holiday
D.
improvements had been made in the construction of buildings and highways
查看完整题目与答案
相关题目：
【判断题】一般空腹全血血糖为0-6.1mmol/L
A.
正确
B.
错误
查看完整题目与答案
【简答题】填空：After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll(死亡人数) could have been much worse. More than 60 people died in t...
查看完整题目与答案
【单选题】患者,男,32岁。反复发热、腹泻2月,经实验室检查“抗HIV阳性”,初步诊断为“艾滋病”。护士对患者进行健康史评估时,下列内容中最不重要的是
A.
有无输血史
B.
有无静脉吸毒史
C.
有无吸食大麻史
D.
妻子有无艾滋病
E.
有无不洁性行为史
查看完整题目与答案
【单选题】两根细长杆,直径、约束均相同,但材料不同,且它们的弹性模量之比为 E 1 : E 2 =2 ,则两杆临界应力的关系为:
A.
( σ cr ) 1 =( σ cr ) 2
B.
( σ cr ) 1 =2( σ cr ) 2
C.
( σ cr ) 1 =( σ cr ) 2 /2
D.
( σ cr ) 1 =3( σ cr ) 2
查看完整题目与答案
【单选题】炭粒廓清试验常用来检测
A.
中性粒细胞功能
B.
巨噬细胞功能
C.
NK细胞功能
D.
B细胞功能
E.
T细胞功能
查看完整题目与答案
【简答题】Passage Three After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had news to report: The damage and death toll could have been much worse. More than 60 people died in t...
查看完整题目与答案
【单选题】两根细长杆，直径、约束均相同，但材料不同，且E 1 =2E 2 则两杆临界应力的关系为(    )。
A.
(σ cr ) 1 =(σ cr ) 2
B.
(σ cr ) 1 =2(σ cr ) 2
C.
D.
(σ cr ) 1 =3(σ cr ) 2
查看完整题目与答案
【单选题】As the life they were used to _____ changed by the terrible earthquake, the people in the earthquake-stricken area are doing all they can ______ their new life.
A.
have now been, build
B.
having now been, to build
C.
has now been, to build
D.
is now, build
查看完整题目与答案
【单选题】After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: the damage and death toll could have been much worse. More than 60 people died in this earth...
A.
new computers had been installed in the buildings
B.
it occurred in the residential areas rather than on the highways
C.
large numbers of Los Angeles residents had gone for a holiday
D.
improvements had been made in the construction of buildings and highways
查看完整题目与答案
【单选题】After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: the damage and death toll could have been much worse. More than 60 people died in this earth...
A.
new computers had been installed in the buildings
B.
it occurred in the residential areas rather than on the highways
C.
large numbers of Los Angeles residents had gone for a holiday
D.
improvements had been made in the construction of buildings and highways
查看完整题目与答案
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