【单选题】【消耗次数：1】
关于“任务”的说法，错误的是（ ）
①
可以有多个后台任务
②
可以将前台任务变为后台任务
③
只有一个前台任务
④
如果不将后台任务变为前台任务，则它不可能完成
参考答案：
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相关题目
【单选题】
下列关于“任务栏”的描述，哪一个是错误的（ ）
①
在任务栏上，只能显示当前活动窗口名
②
通过任务栏上的按钮，可以实现窗口之间的切换
③
可以将任务栏设置为自动隐藏
④
任务栏可以移动位置
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