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【简答题】
维果茨基把儿童独立解决问题的真实水平与经他人帮助后所能达到的潜在发展水平之间的差距称为（）。
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皮皮学刷刷变学霸
举一反三
【单选题】Which of the following statements in relation to liquidated damages is correct?
A.
Parties to a contract must stipulate an amount of money as liquidated damages
B.
A party to a contract may claim liquidated damages and deposit where the other party breaches the contract
C.
Where they are significantly higher than the damages incurred, a party may petition the court to make an appropriate reduction
D.
They are a form of punishment in nature
【简答题】在上图中所示电路中，由于电路参数不同，在信号源电压为正弦波时，测得输出波形如下图(a)，(b)，(c)所示。试说明电路分别产生了什么失真，如何消除。
【简答题】试求图中所示电路中电压源的角频率为何值时，功率表W的读数为零(图中元件的参数已知)。
【单选题】Which of the following statements correctly describe the relation between a t-distribution (short for T) and a standard normal distribution (short for N)?
A.
N is centered （中心） at 0, whereas T is centered at n-1
B.
N has a larger standard deviation （标准差） than T
C.
N is just another name of T
D.
T has a larger standard deviation than N
【单选题】Relation of substitutability is also called ____________.
A.
chain relation
B.
syntagmatic relation
C.
paradigmatic relation
D.
word order
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