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【单选题】
在下列各电池中,其电池电动势与氯离子的活度a(Cl-)无关的是:( )A.
Zn|ZnCl 2 (aq)|Cl 2 (p),Pt
B.
Zn|ZnCl 2 (aq)|KCl(aq)|AgCl,Pt
C.
Pt,H 2 (p1)|HCl(aq)|Cl 2 (p2),Pt
D.
Ag,AgCl|KCl(aq)|Cl 2 (p),Pt
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【简答题】腹部手术后腹胀多因肠管受到激惹，______减弱所致，病人术后呻吟、憋气等可咽入大量易被肠黏膜吸收的气体而加重腹胀。
【简答题】腹部手术后腹胀多因肠管受到激惹，____________减弱所致，患者术后因呻吟、憋气等，可咽入大量易被肠粘膜吸收的气体而加重腹胀。
【多选题】质量控制常用的统计方法中,下列属于最基本的质量改进工具和技术的是( )。
A.
调查表和分层图
B.
水平对比法和头脑风暴法
C.
因果图、流程图和树图
D.
控制图、直方图、排列图和散布图
E.
子样平均值图
【简答题】混凝土的基本组成材料有哪几类?分别在混凝土中起什么作用?
【单选题】Foxes and farmers have never got on well. These small dog-like animals have long been accused of killing farm animals. They are officially classified as harmful and farmers try to keep their numbers d...
A.
for recreation
B.
to limit the fox population
C.
in the interests of the farmers
D.
to show off their wealth
【单选题】Foxes and farmers have never got on well. These small dog-like animals have long been accused of killing farm animals. They are officially classified as harmful and farmers try to keep their numbers d...
A.
for recreation
B.
in the interests of the farmers
C.
to limit the fox population
D.
to show off their wealth
【简答题】腹部手术后腹胀多因肠管受到激惹 , ____ 减弱所致。
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