问题 单项选择题

如果有多个中断同时发生,系统将根据中断优先级响应优先级最高的中断请求。若要调整中断事件的响应次序,可以利用

A.中断嵌套

B.中断向量

C.中断响应

D.中断屏蔽

答案

参考答案:D

解析: CPU是否允许某类中断是由当前程序状态中的中断屏蔽位决定。硬件提供了中断屏蔽指令,利用此指令可暂时禁止任意一个或多个中断源向处理机发出中断请求。

阅读理解

阅读理解。

     Afghan, NATO forces capture several insurgents

     2011-11-18 07:10:34

     Afghan and the NATO-led International Security Assistance Force (ISAF) captured several anti-government militants in Helmand province 555 km south of Afghan capital Kabul on Thursday.

     Wen in Bali for East Asian leaders' meetings

     2011-11-17 19:39:07

     Chinese Premier Wen Jiabao arrived in Bali on Thursday to attend a series of meetings for East Asian leaders scheduled from Nov 17 to 21.

     Bali to hold ASEAN Plus Three, AEAN Plus One Summits

     2011-11-17 16:19:59

     The 14th ASEAN Plus Three Summit and a series of ASEAN Plus One Summits will be convened here on

Friday, according to a statement issued by the Indonesian Ministry of Foreign Affairs Thursday.

     Death toll in floods in Thailand reaches

     567 2011-11-17 15:43:01

     A total of 567 people were confirmed dead and two others were missing in the floods that have inundated

the upper part of the country for about four months. Previous Page 1 2 3 4 5 6 7 8 9 10 Next Page >>|

1. Which of the following statements is TRUE according to the passage?

A. Afghan alone captured several anti-government militants in Helmand province.

B. The total number of victims in floods in Thailand reached 567.

C. Wen Jiabao arrived in Bali to attend a series of meetings for Asian leaders.

D. A series of meetings will be held in Bali lasting 5 days.

2. The four pieces of news are issued _______.

A. in the order of time

B. in the order of place

C. in the order of logic

D. in the order of significance

3. What does the underlined word "convened" mean in the third piece of news?

A. held

B. continued

C. celebrated

D. attended

4. This passage is most probably from _______.

A. a newspaper

B. a website

C. a research paper

D. a novel

问答题