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【单选题】
在间接碘量法中加入淀粉指示剂的适宜时间是
A.
滴定开始时
B.
滴定近终点时
C.
滴入标准溶液近50%时
D.
滴入标准溶液至50%后
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参考答案：
参考解析：
知识点：
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举一反三
【多选题】在检索文献时,使用逻辑“与”是为了( )。
A.
提高查全率
B.
提高查准率
C.
减少漏检率
D.
缩小检索范围
查看完整题目与答案
【单选题】What does the professor mean when he says that folktales are communal?
A.
They vary little from one community to another.
B.
They serve to strengthen ties among individuals within a community.
C.
They relate important events in the history of a community.
D.
They can be adapted to meet the needs of a community.
查看完整题目与答案
【单选题】在ADC的扫描模式中，如果设置了DMA位，在每次EOC后，DMA控制器把规则组通道的转换数据传输到（ ）中
A.
SRAM
B.
Flash
C.
ADC_JDRx寄存器
D.
ADC_CR1
查看完整题目与答案
【单选题】What does the sentence '... meals in Gir are not necessarily frantic affair' (Para. 3) mean?
A.
The lions do not show intimacy among them any more.
B.
The lions may not need to fight for food.
C.
Food is not readily available in that region.
D.
Meals can be obtained only with great effort.
查看完整题目与答案
【单选题】在ADC的扫描模式中,如果设置了DMA位,在每次EOC后,DMA控制器把规则通的转换数据传输到( )中。
A.
SRAM
B.
Flash
C.
ADC_JDRx寄存器
D.
ADC_CR1寄存器
查看完整题目与答案
【简答题】编写STM32程序,通过ADC转换器采样电位器电压,并转换为电压值。 (a)ADC采样端口为?配置端口模式,写出一行代码? (b)ADC模式、扫描模式、连续转换模式、外部触发源、数据对齐方式、转换通道数量各写出一行配置代码 (c)ADC输入时钟配置,写出一行代码 (d)ADC使用规则转换模式,写出一行代码,对ADC规则采样通信与采样时间进行配置 (e)写出ADC校准的两行代码 (f)写出ADC开启...
查看完整题目与答案
【单选题】What does Professor Carole Counihan say about. pre-industrial European families eating meals together?
A.
It was helpful to maintaining a nation's tradition.
B.
It brought family members closers to each other.
C.
It was characteristic of the agrarian culture.
D.
It enabled families to save a lot of money.
查看完整题目与答案
【单选题】To what does 'this may well vary' refer?
A.
The expenditure on books
B.
The num.ber of books stolen
C.
The vigilance of the assistants
D.
The number of books stocked
查看完整题目与答案
【单选题】听力原文：M: The chicken dish is really spicy. W: So is the salad. Q: What does the woman mean? (17)
A.
Rice Should be served with the chicken.
B.
The dishes here are never spicy.
C.
There really is chicken in the salad.
D.
Both the chicken dish and the salad taste spicy.
查看完整题目与答案
【单选题】Constance Hale says 'email has been an incredible boon to communication'．What Does she mean by this?
A.
People want to see the person they are talking to on the phone．
B.
email is easier than talking on the phone.
C.
People are using writing and reading more with email.
D.
email is not private enough.
查看完整题目与答案
相关题目：
【多选题】在检索文献时,使用逻辑“与”是为了( )。
A.
提高查全率
B.
提高查准率
C.
减少漏检率
D.
缩小检索范围
查看完整题目与答案
【单选题】What does the professor mean when he says that folktales are communal?
A.
They vary little from one community to another.
B.
They serve to strengthen ties among individuals within a community.
C.
They relate important events in the history of a community.
D.
They can be adapted to meet the needs of a community.
查看完整题目与答案
【单选题】在ADC的扫描模式中，如果设置了DMA位，在每次EOC后，DMA控制器把规则组通道的转换数据传输到（ ）中
A.
SRAM
B.
Flash
C.
ADC_JDRx寄存器
D.
ADC_CR1
查看完整题目与答案
【单选题】What does the sentence '... meals in Gir are not necessarily frantic affair' (Para. 3) mean?
A.
The lions do not show intimacy among them any more.
B.
The lions may not need to fight for food.
C.
Food is not readily available in that region.
D.
Meals can be obtained only with great effort.
查看完整题目与答案
【单选题】在ADC的扫描模式中,如果设置了DMA位,在每次EOC后,DMA控制器把规则通的转换数据传输到( )中。
A.
SRAM
B.
Flash
C.
ADC_JDRx寄存器
D.
ADC_CR1寄存器
查看完整题目与答案
【简答题】编写STM32程序,通过ADC转换器采样电位器电压,并转换为电压值。 (a)ADC采样端口为?配置端口模式,写出一行代码? (b)ADC模式、扫描模式、连续转换模式、外部触发源、数据对齐方式、转换通道数量各写出一行配置代码 (c)ADC输入时钟配置,写出一行代码 (d)ADC使用规则转换模式,写出一行代码,对ADC规则采样通信与采样时间进行配置 (e)写出ADC校准的两行代码 (f)写出ADC开启...
查看完整题目与答案
【单选题】What does Professor Carole Counihan say about. pre-industrial European families eating meals together?
A.
It was helpful to maintaining a nation's tradition.
B.
It brought family members closers to each other.
C.
It was characteristic of the agrarian culture.
D.
It enabled families to save a lot of money.
查看完整题目与答案
【单选题】To what does 'this may well vary' refer?
A.
The expenditure on books
B.
The num.ber of books stolen
C.
The vigilance of the assistants
D.
The number of books stocked
查看完整题目与答案
【单选题】听力原文：M: The chicken dish is really spicy. W: So is the salad. Q: What does the woman mean? (17)
A.
Rice Should be served with the chicken.
B.
The dishes here are never spicy.
C.
There really is chicken in the salad.
D.
Both the chicken dish and the salad taste spicy.
查看完整题目与答案
【单选题】Constance Hale says 'email has been an incredible boon to communication'．What Does she mean by this?
A.
People want to see the person they are talking to on the phone．
B.
email is easier than talking on the phone.
C.
People are using writing and reading more with email.
D.
email is not private enough.
查看完整题目与答案