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问题 单项选择题

关于单纯型分裂症，正确的为（）

A.以妄想为主，伴有幻觉

B.青年期起病，以思维情感、行为障碍或綮乱为主

C.以紧张综合征为主，常见木僵

D.起病隐袭，缓慢进展，无明显阳性症状，常在青少年起病

E.以上均错

答案

参考答案：D

单项选择题

发明专利权的期限为20年，自( )起计算。

A．申请之日
B．登记之日
C．公告之日
D．授予之日
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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.

19（）

A.processor 

B.power 

C.usage 

D.palm
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