【单选题】Windows 7中,对于“任务栏”的描述不正确的是( )。
A.
Windows 7不允许用户添加程序图标到任务栏
B.
利用“任务栏属性”对话框“任务栏选项”选项卡提供的“总在最前”可以选择是否允许其他窗口覆盖“任务栏”
C.
当“任务栏”是“自动隐藏”的属性时,“任务栏”一般不显示
【判断题】三显示自动闭塞区段的连续式机车信号机显示一个红色灯光,表示列车已越过地面上显示红色灯光的信号机。
【单选题】Since calculators were introduced, they _________ to be useful tools for people weak in math.
【单选题】Structural changes in an economy and changes in consumer tastes are reasons for:
A.
job creation and job destruction.
C.
unemployment during recessions.
D.
unemployment during expansions.
【简答题】account for stand outIn the current economy, with unemployment high and competition for jobs fierce, your resume need to __________ for the right reasons.
【单选题】Since calculators were introduced, they _____ to be useful tools for people weak in math.
【单选题】表示列车已越过地面上显示红色灯光的信号机时,机车信号显示为( )。