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【单选题】
教师专业发展的最核心内容是教师素质的提高,教师素质不由以下哪些方面组成
A.
基本素质 正确
B.
专业发展素质 正确
C.
职业发展素质 正确
D.
计算机素养
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B.
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【判断题】今草的特点是字字独立,大小均匀。()
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B.
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【单选题】质量作用定律适用于
A.
对峙反应
B.
基元反应
C.
平行反应
D.
连续反应
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【单选题】交换机连成的网络属于同一个
A.
冲突域
B.
广播域
C.
管理域
D.
控制域
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【单选题】质量作用定律适用于
A.
平行反应的总反应
B.
对峙反应的总反应
C.
连串反应的总反应
D.
基元反应
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【单选题】鉴定物质的化学组成属于
A.
定性分析
B.
定量分析
C.
结构分析
D.
化学分析
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【多选题】Explain why a cell’s response to a signal can be fast or slow.
A.
The length of time a cell takes to respond to an extracellular signal can vary greatly, depending on what needs to happen once the message has been received.
B.
Some extracellular signals act swiftly: acetylcholine can stimulate a skeletal muscle cell to contract within milliseconds and a salivary gland cell to secrete within a minute or so. Such rapid responses are possible because, in each case, the signal affects the activity of proteins that are already present inside the target cell, awaiting their marching orders.
C.
Other responses take more time. Cell growth and cell division, when triggered by the appropriate signal molecules, can take many hours to execute.
D.
This is because the response to these extracellular signals requires changes in gene expression and the production of new proteins.
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【判断题】今草字字独立,大小均匀
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【单选题】交换机连成的网络属于同一个
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【单选题】质量作用定律适用于
A.
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B.
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C.
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【单选题】鉴定物质的化学组成属于
A.
定性分析
B.
定量分析
C.
结构分析
D.
化学分析
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【多选题】Explain why a cell’s response to a signal can be fast or slow.
A.
The length of time a cell takes to respond to an extracellular signal can vary greatly, depending on what needs to happen once the message has been received.
B.
Some extracellular signals act swiftly: acetylcholine can stimulate a skeletal muscle cell to contract within milliseconds and a salivary gland cell to secrete within a minute or so. Such rapid responses are possible because, in each case, the signal affects the activity of proteins that are already present inside the target cell, awaiting their marching orders.
C.
Other responses take more time. Cell growth and cell division, when triggered by the appropriate signal molecules, can take many hours to execute.
D.
This is because the response to these extracellular signals requires changes in gene expression and the production of new proteins.
查看完整题目与答案