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问题 单项选择题

女性，10岁，背痛、低热、盗汗6个月。查：轻度贫血貌，胸腰部后凸畸形，棘突叩痛(+)．拾物试验 (+)。首选检查是

A．血沉

B．碱性磷酸酶

C．摄胸腰段脊柱X线片

D．血常规

E．肿瘤系列

答案

参考答案：C

单项选择题

生活饮用水水源取水点上游( )和下游( )以内的水域，不得排入施工废污水。

A．300m，100m

B．500m，100m

C．600m，200m

D．1000m，100m
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单项选择题

There is no question that computer applications such as (71) , electronic mail, and (72) publishing have changed the way people work. These computer applications have enhanced users capacity for communication and have improved their productivity. The success of these applications has prompted both vendors and researchers to continue to seek new ways to further advance the information technology revolution. Enter the latest innovation: networked (73) systems. They convey information in multiple (74) : text, graphics, video, audio, (75) , computer simulations, and so forth. Advocates of these systems argue that they are the next logical step in human communication; however, modifying our current networks to accommodate the variety of media will present significant technical difficulties.

A．numerical data

B．number data

C．numeral data

D．numerous data
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