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搜题
【单选题】
我们能很顺利地将广播体操一个动作接一个动作 ,一节接一节地做下来,这是( )在起作用。
A.
形象记忆
B.
动作记忆
C.
情绪记忆
D.
语词记忆
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【简答题】思琪同学在妈妈买回的某食品包装袋内发现有一包白色颗粒状固体A的小纸袋,上面写着“生石灰干燥剂,请勿食用”. 思琪同学随手将小纸袋放在放在窗台上,过一段时间后发现纸袋内的白色颗粒粘在一起成为块状固体B.思琪同学请你和同学们一起对块状固体B进行研究. (1) 猜想一:块状固体B中除氧化钙外,还可能有______ 猜想二:块状固体B溶于水可能有______现象,(填“放热”或“吸热”). 请你设计实验验...
【单选题】人体解剖生理学是研究正常人体的
A.
新陈代谢
B.
结构和功能
C.
生命活动规律
D.
对环境的适应性
E.
形态结构
【单选题】6A-3. Which one is not mentioned by the author as a reason that contributes to the prosperity of the travel industry?
A.
Some consumers are positioned to sell and seek bargains.
B.
The rising of middle and upper classes in Asia and their purchase power.
C.
Technology injects new vitality into the industry and makes creativity possible.
D.
The participation and intermediary function of smart young travel retailers.
【多选题】已知某反应系统为 ,其微分方程可以描述为 ,初始条件为时间t为0时,C1的浓度为1,C2,C3为0。 已知k1,k2,k3分别为0.04,1,3。求时间为800时,C1,C2,C3的浓度分别为多少?
A.
0.133487
B.
0.006081
C.
0.860432
D.
0.0725
E.
0.010712
F.
0.850759
【多选题】已知某反应系统为 ,其微分方程可以描述为 ,初始条件为时间t为0时,C1的浓度为1,C2,C3为0。 已知k1,k2,k3分别为0.04,1,3。求时间为700时,C1,C2,C3的浓度分别为多少?
A.
0.145085
B.
0.006689
C.
0.848226
D.
0.054613
E.
0.042301
F.
0.796061
【多选题】已知某反应系统为 ,其微分方程可以描述为 ,初始条件为时间t为0时,C1的浓度为1,C2,C3为0。 已知k1,k2,k3分别为0.04,1,3。求时间为100时,C1,C2,C3的浓度分别为多少?
A.
0.380817
B.
0.023086
C.
0.596096
D.
0.310942
E.
0.057463
F.
0.546049
【单选题】Choose the best answer to each of the following questions according to what is stated or implied in Text A. Which one is NOT mentioned by the author as a reason that contributes to the prosperity of t...
A.
Some consumers are positioned to sell and seek bargains.
B.
The rising of middle and upper classes in Asia and their purchase power.
C.
Technology injects new vitality into the industry and makes creativity possible.
D.
The participation and intermediary function of smart young travel retailers.
【多选题】已知某反应系统为 ,其微分方程可以描述为 ,初始条件为时间t为0时,C1的浓度为1,C2,C3为0。 已知k1,k2,k3分别为0.04,1,3。求时间为400时,C1,C2,C3的浓度分别为多少?
A.
0.200683
B.
0.009825
C.
0.789492
D.
0.126276
E.
0.014168
F.
0.721295
【单选题】Which one is NOT mentioned by the author as a reason that contributes to the prosperity of the travel industry?
A.
Some consumers are positioned to sell and seek bargains.
B.
The rising of middle and upper classes in Asia and their purchase power.
C.
Technology injects new vitality into the industry and makes creativity possible.
D.
The participation and intermediary function of smart young travel retailers.
【多选题】已知某反应系统为 ,其微分方程可以描述为 ,初始条件为时间t为0时,C1的浓度为1,C2,C3为0。 已知k1,k2,k3分别为0.04,1,3。求时间为500时,C1,C2,C3的浓度分别为多少?
A.
0.177173
B.
0.008457
C.
0.814371
D.
0.127171
E.
0.080194
F.
0.810128
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