【单选题】Be quick! The plane is going to _____, or we'll miss it. [ ]
【单选题】What is Ellen Davis' recommendation for shoppers?
B.
Take advantage of discounts.
C.
Spend more to qualify for free shipping.
D.
Ask for free shipping.
【简答题】已知:FDM系统的一条通信线路的带宽为200kHz,每路信号带宽为4.2kHz,相邻信道之间的隔离带宽为0.8kHz。求这条线路可以传输多少路信号?
【单选题】在下列存储管理方案中,一个作业在内存中一定是连续存放的是( )。
【单选题】The Northern industrialists were quick to take to tipping because ______.
A.
they thought they were richer than the Southern slave owners
B.
they were winners in the Civil War
C.
they wanted to show off their fortune
D.
they wanted to learn from the Southerners
【单选题】在下列存储管理方案中,一个作业在内存中不一定是连续存放的是( )。
【多选题】在下列存储管理方案中,一个作业在内存中一定是连续存放的有( )。
【判断题】 利用盘左和盘右两个位置观测同一方向的水平角,可以清除水平度盘偏心的影响。