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【简答题】
n. [C, U] a chemical substance that has a PH of less than 7 (化学物质)酸
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举一反三
【单选题】When data processing takes place, information from memory is transferred to selected ( )
A.
registers
B.
decoders
C.
encoders
D.
adders
【判断题】DRDBMSs have an edge over MMDBMSs in some respects since many simplifications can be used that reduce the processing power required when data is guaranteed to be in main memory.
A.
正确
B.
错误
【简答题】所谓的概念的内涵,是指概念所反映的事物的特有本质属性,是概念质的方面,指概念所反映的事物是什么样的;概念的外延是指概念的适用范围,是概念量的方面,说明概念所反映的是哪些事物。例如:“电解质”的内涵是 在溶于水或熔融状态下能导电的化合物 ;外延是____
【单选题】在幼儿探索方糖在水中是如何溶解的活动中,他们不必去学习溶解的概念,只是观察方糖在水中逐渐溶化。这说明幼儿学习科学有赖于()
A.
具体形象
B.
个人经验
C.
他人支持
D.
同伴支持
【简答题】心身疾病的概念
【单选题】In1953 , when the writer entered the data processing field, he was to learn that electronic computers could perform several thousands additions per second.
A.
frightened
B.
embarrassed
C.
dismayed
D.
astounded
【简答题】水溶性维生素的概念是什么？
【简答题】岩溶水的概念是什么?
【单选题】In 1953, when the writer entered the data processing field, he was ______ to learn that electronic computers could perform several thousand additions per second.
A.
frightened
B.
embarrassed
C.
dismayed
D.
astounded
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