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问题 单项选择题

已知数据表A中每个元素距其最终位置不远，为节省时间，应采用的算法是______。

A．堆排序
B．直接插入排序
C．快速排序
D．直接选择排序

答案

参考答案：B

解析： 当数据表A中每个元素距其最终位置不远，说明数据表A按关键字值基本有序，在待排序序列基本有序的情况下，采用插入排序所用时间最少，故答案为选项B。

单项选择题

患者，女，49岁，自觉右颊黏膜粗糙感1个月，伴有刺激痛。临床检查：双颊黏膜有白色条纹，呈树枝状。

下列哪项检查对诊断最为主要

A．间接免疫荧光检查

B．病损组织细胞培养

C．脱落细胞学检查

D．组织病理学检查

E．甲苯胺蓝染色检查
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单项选择题

Personal computers are used by one person at a time. The largest personal computer, or PC.S, can fit on a (1) . Some of these (2) have more than one microprocessor. (3) the primary processor, which is a general-purpose device, a PC may have one or more processors to (4) special kinds of work. Some machines, (5) , have maths processors, others have graphics processors to help process photographs and other illustrations. Still others have (6) processors.

Office workers also use PCS that are not (7) to a network. These machines are used for (8) tasks as word processing, performing financial calculations, and organizing and (9) bodies of information called databases. People use PCS at (10) for some of the same kinds of tasks. They use word processing programs for (11) communication, financial software for household budgets. Individuals also use their home computers to play (12) and to communicate (13) the internet.

Small, portable PCS are (14) with people who often work away from their desks. The (15) include laptop computers, which can be (16) on the lap; notebook computers, which are about the (17) of a loose leaf notebook; and palmtop, or handheld computers, which can be operated while (18) in the hand. Laptop and notebook computers have the same (19) as desktop computers. Palmtop computers have less power but still (20) some advanced capabilities. For example, they can process household financial data.

18（）

A.held 

B.holding 

C.took 

D.taking
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