题目内容

传输层用于标识不同的应用的是______。

A. 物理地址
B. 端口号
C. IP地址
D. 逻辑地址

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Many manufacturers were accused of concentrating too heavily on cost reduction, often at the ______ of the quality of their products.

A. expansion
B. exposure
C. expense
D. expectation

通过改变载波信号的相位值来表示数字信号1、0的方法是______。

ASK
B. FSK
C. PSK
D. PPP

______ bright was the moon that the flowers were bright as by day.

A. So
B. Such
C. Such a
D. Much

如果将中国人按照生日(不考虑年份,只考虑月、日)来排序,那么使用下列排序算法中最快的是______。

A. 归并排序
B. 希尔排序
C. 快速排序
D. 基数排序

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