问题 单项选择题

当Intel 8255A被设定成方式1时,其功能相当于()。

A.0线握手并行接口

B.1线握手并行接口

C.2线握手并行接口

D.多线握手并行接口

答案

参考答案:C

解析:方式0称为基本输入/输出工作方式;方式1为应答式输入/输出工作方式;方式2为应答式双向输入/输出工作方式。当Intel 8255A被设定成方式1时,其功能相当于2线握手并行接口。

选择题
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Four goals for Perfect Life .

      Healthy and Fit

     The first goal common to all of us is health and energy.   1   Today, with the incredible advances in medical

science, the quality of our health and fitness, and our lifespan (寿命), is largely determined by design, not by

chance. People with excellent health habits are far healthier, have more energy, and live longer and better than

people who have poor health habits.

     Excellent Relationships

         2  Fully 85% of your happiness will be determined by the quality of your relationships at each stage, and

in each area, of your life. How well you get along with people, and how much they like, love and respect you,

has more impact on the quality of your life than perhaps any other factor.

     Do What You Love

     The third common goal is to do work that we enjoy, to do it well, and to be well paid for it.   3  You want to earn the very most that is possible for you at each stage of your career, whatever you do. 

        4    

     The fourth goal we all have in common is to achieve financial independence.  5   You want to be completely

free of financial worries. You want to be able to order dinner in a restaurant without using the price listings to

determine what you want to eat.

A. We don't want to get the job that we aren't well paid and don't promote faster.

B. Achieve Financial Independence

C. Money is the most important for we can't go without it.

D. You want to reach the point in life where you have enough money so that you never have to worry

     about money again.

E. You want to be able to get and keep the job you want, to get paid more and promoted faster.

F. The second goal that we all have in common is to enjoy excellent relationships with the people we like

    and respect, and who like, love and respect us in turn.

G. We all want to be healthy and fit, to have high levels of energy and to live free of pain and illness.