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问题 单项选择题

脊髓纵裂不常伴发一下哪种异常（）

A、终丝增粗 

B、脊髓积水症 

C、脂肪瘤 

D、背部皮毛窦 

E、脊髓肿瘤 

答案

参考答案：E

解析：（脊髓纵裂常合并其他脊髓、脊椎发育障碍和畸形，如脊髓栓系、脊髓空洞、脊髓低位、蝴蝶椎、半椎体、皮肤色素沉着/毛发生长、脊膜膨出和脊髓脊膜膨出，同时可合并椎管内脂肪瘤、畸胎瘤等）

单项选择题

Personal computers are used by one person at a time. The largest personal computer, or PCS, 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.

二、完形填空

A．these

B．such

C．different

D．same
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问答题 简答题

安装管道法兰和阀门时应注意什么？
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