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【简答题】
异烟肼的酰肼基具有较强的还原性,可用 直接氧化滴定。其中 是获得定量反应的基本条件,滴定时应 ,以免溴酸钾局部过浓,使指示剂破坏而终点提前。
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举一反三
【单选题】拦截网或“天钩”回收_____[1分]
A.
用拦截网系统回收无人机是目前世界中型无人机较普遍采用的回收方式之一
B.
拦截网系统通常由拦截网.能量吸收装置组成
C.
能量吸收装置与拦截网相连,其作用是吸收无人机撞网的能量,免得无人机触网后在网上弹跳不停,以致损伤
【简答题】翻译:There is Chinese food in the US, but it's not nearly as good as the food in China.
【单选题】听力原文： 'High tech' and 'state of the art' are two expressions that describe very modern technology. (29)High tech is just a shorter way of saying high technology. And high technology describes any inve...
A.
To tell what 'high tech' and 'state of the art' are.
B.
To tell how 'high tech' and 'state of the art' have developed.
C.
To give examples of high tech.
D.
To describe the modern technology.
【单选题】Which of the following best describes a system which attempts to make sense of what a person is saying by comparing the word phonemes generated in pattern classification with a language model database...
A.
Structured Query Language
B.
Language processing
C.
Feature analysis
D.
Voice over Internet Protocol
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