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问题 单项选择题

插入三腔两囊管的上消化道出血患者突然出现呼吸困难，护士首先采取的措施是

A．开放静脉通道
B．口对口人工呼吸
C．抽出食道囊气体或剪断三腔尾端
D．吸氧
E．胸外按压

答案

参考答案：C

单项选择题

Embedded system is (66) special computer system which is scalable on both software and (67). It can satisfy the strict requirement of functionality, (68) , cost, volume, and power consumption of the particular application. With rapid development of (69) design and manufacture, CPUs became cheap. Lots of (70) electronics have embedded CPU and thus became embedded systems. For example, PDAs, cellphones, point-of-sale devices, VCRs, industrial robot control, or even your toasters can be embedded system.

A．IC

B．manual

C． flexible

D．emulational
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单项选择题

在色彩的比较中给人以比实际距离近的色彩叫（）

A.前进色

B.后退色

C.间色

D.原色
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