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学前儿童心理学

【参考答案】

以学前儿童为研究对象，研究从受精卵形成到入学前这一成长过程中，儿童生理、心理和行为的发生、发展规律，以及各年龄阶段的心理......

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单项选择题

Refer to the exhibit. A router has a 256 kbps Frame Relay circuit connected to interface serial 0/0. As a large FTP packet is being placed into the hardware transmit queue of interface serial 0/0， a voice packet is placed into the priority queue of that interface. How， and in what order， wi the packets be transmitted？（）

A.the voice packet will be transmitted first， followed by the FTP packet in its entirety
B.the voice packet will be transmitted first， followed by the fragmented FTP packet
C.the FTP packet will be fragmented and the voice packet will be interleaved
D.the FTP packet will be transmitted first in its entirety， follow by the voice packet

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群体行为

单项选择题

一国某年末外债余额43亿美元，当年偿还外债本息额14亿美元，国内生产总值325亿美元，商品劳务出口收入56亿美元，则偿债率为（）。

A.4.30%
B.32.56%
C.56%
D.4%