特权指令只能在内核态下执行，而不能在用户态下执行。_爱下问搜题

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问题判断题

特权指令只能在内核态下执行，而不能在用户态下执行。

答案

参考答案：对

解析：特权指令可以访问计算机的所有资源，它的执行只能在内核态下。

问答题简答题

政治部门负责管理士官的什么工作？

完形填空

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
When I was a kid , my dad used to sing an old song , “ Pack up your Troubles,” while working in the morning . The song plays in my head often    36   I’m packing for a trip --- “ Pack up your    37   in your old kit bag and smile , smile , smile .” Lately , with regulations(rules)   38   daily , packing my kit bag with clothes and toothbrush seems   39  like trouble than fun , fun , fun .
For my friend , Vikki , though ,    40 to pack isn’t as important as whom to pack . She   41  her family and friends everywhere. Vikki took her mother skiing in Mammoth   42   she took my mother-in-law to Rome. Vikki    43   prayer cards of her loved ones and takes them with her wherever she goes. The    44   have the images of Jesus and pictures of a dead friend and “ in loving memory”.   45 , I’m not as sentimental(多愁善感的) about Vikki’s collection as she is , but on a trip two years ago , I    46  power of those prayer cards.
Larry and I were in Peru with Vikki and Bill . We had just finished    47  at a restaurant in Agua Calientes , when Vikki    48   a small card across the table to Larry and asked , “ Would you like to have your    49   with you tomorrow when you climb Machu Picchu ?” Larry was visibly   50   by the gesture and slipped the prayer card from his mother’s funeral into his shirt    51  . The next day , Larry had his mom with him indeed .
It was then I    52  the enormous happiness Vikki must feel   53   . With all the rules today about what    54  can’t bring on a flight , maybe we’d all be a little more   55  if we focused on the things we can bring and make sure they are what make us happy or at least smile , smile , smile .

B．toothbrushes

A．Unfortunately

B．at all times

C．at one time

B．disappointed