下面关于8259A可编程中断控制器的叙述中,正确的是A.8259A的命令字共有7个,

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问题:

下面关于8259A可编程中断控制器的叙述中,正确的是

A.8259A的命令字共有7个,其中初始化命令字有3个,操作命令字有4个

B.8259A的命令字共有7个,因此,8259A应有7个命令端口,通过3根地址线来寻址

C.8259A的初始化命令字不必按一定的顺序写入

D.8259A的操作命令字不必按一定的顺序写入

考点:计算机等级考试PC技术三级PC技术笔试
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慢性胃炎患者,胃脘隐痛,嘈杂,口干咽燥,五心烦热,大便干结,舌红少津,脉细。治疗应首选的方剂是()

A.沙参麦冬汤

B.生脉饮

C.滋水清肝饮

D.益胃汤

E.玉女煎

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阅读理解。

     Every kid wishes to be an adult. But now as grown-ups, some adults find they cannot leave childhood

behind. They become "kidults" (kid+adult). Being a kidult has become a lifestyle-choice among young people

across Asia.

     Some kidults collect toys they once played with. Hello Kitty, Garfield, and Snoopy have many adult fans

around the world. It is not unusual to see a 20-something woman with a big, Garfield-shaped cushion (坐垫)

on her sofa or a Hello Kitty mobile phone accessory (挂件).

     Other kidults still enjoy children's stories and fairy tales. For example, Bloomsbury even published the

Harry Potter novels with an adult cover. That way, no one else on the subway will know that an adult is

actually reading a children's book!

     "Kidults can be like vitamins to society. Adults who value their childhood and hold on to pure, child-like

emotion may be needed in such a rough and dry society," said Lee Sojung, professor of Foreign Studies at

Hankuk University (韩国外国语大学). He added that kidult culture may fill the generation gap between adults

and kids. It could give children and their parents books, movies, and cartoon shows to enjoy together. He may

be right.

     Tim Greenhalgh, a professor, explained that some kidults just refuse to grow up. They value childhood

because life in a busy and stressful city frightens them. Kidults would like to forget their age and openly show

their fear of society and adulthood.

1. Why did Bloomsbury publish the Harry Potter novels with an adult cover? [ ]

A. Bloomsbury knows some kidults don't want people to know that they are kidults.

B. Bloomsbury thinks it can attract more readers.

C. Bloomsbury knows kidults prefer to chose books for adults in nature.

D. Bloomsbury thinks the cover with an adult is better.

2. Being a kidult is good in some way EXCEPT that _____. [ ]

A. it is helpful to solve some social problems

B. it can make people listen to their parents

C. it can improve the relationship between parents and their kids

D. it can help kidults feel relaxed

3. According to the writer, _____. [ ]

A. our society is very dull

B. kidults have mental problems

C. being a kidult is nothing wrong

D. some people can never grow up

题型:单项选择题

氯化铵和硝酸钾溶解度曲线如下图所示,下列叙述正确的是(    )

A.60℃时,硝酸钾的溶解度小于氯化铵的溶解度

B.40℃的硝酸钾饱和溶液降低温度会变为不饱和溶液

C.t℃时,氯化铵饱和溶液与硝酸钾饱和溶液的溶质的质量分数相等

D.硝酸钾中混有少量氯化铵可用蒸发溶剂法提纯硝酸钾

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讲解员怎样才能够做到言之有情?

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某竣工验收合格的引水渠工程,初期通水后两岸坡体出现了很长的纵向裂缝,并局部地面下沉,该地区土质可能为()。

A.红粘土

B.软岩

C.砂土

D.湿陷性黄土

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