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问题 单项选择题

下面关于PC机键盘的叙述中，不正确的是()。

A．台式PC机键盘的按键数目现在已超过100个键，笔记本电脑受到体积的限制，按键数目仅为80多个

B．目前普遍使用的键盘按键都是电容式的，它的优点是击过声音小，无接触，不存在磨损和接触不良问题

C．PC机键盘向PC机输入的是8位串行的ASCII码

D．PC机键盘中包含有一个单片机，它负责键盘扫描、消除抖动、生成代码并进行并/串转换，然后将串行数据送往主机

答案

参考答案：C

解析：在战略数据规划方法中，有过程/组织矩阵，企业资源/数据类型矩阵，过程/数据类矩阵等，所以经常使用的是矩阵图。

单项选择题 A1型题

宜砂炒的药物不包括（）

A.鳖甲

B.穿山甲

C.马钱子

D.鸡内金

E.阿胶
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单项选择题

Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight (16) before setting down. High desert winds had (17) the airport to close all but one runway. He said that we would be (18) the city for a few minutes waiting to (19) . We were also told to remain in our seats meanwhile with our seat belts fastened (20) there might be a few bumps(颠簸). Well, that few minutes turned into about four-five minutes, including a ride that would make a roller coaster(过山车) (21) by comparison. The movement was so fierce that several passengers felt (22) and had to use airsickness bags. As you might guess, that’ s not a good thing to have happen in a(n) (23) space because it only (24) to increase the discomfort of the situation.

About twenty minutes into the adventure, the entire airplane became very (25) There was now a sense of anxiety and fear that could be (26) noticed. Every passenger simply held on for dear life …except one. A (27) was having a good time！ With each bump of the (28) , he would let out a giggle (咯咯地笑)of delight. As I observed this, I (29) that he didn’t know he was supposed to be afraid and worried about his (30) . He neither thought about the past nor about the future. Those are what we gown--ups have learned from (31) . He was (32) the ride because he had not yet been taught to fear it. Having understood this, I took a deep breath and (33) back into my seat, pretending I was (34) on a roller coaster. I smiled for the rest of the flight. I even (35) to giggle once or twice, much to the chagrin(随恼) of the man sitting next to me holding the airsickness bag.

23（）

A.arrive 

B.enter 

C.stop 

D.land
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