1岁以下准备手术的婴儿,为防止因饥饿而产生酸中毒,可于麻醉前几小时喂少量的糖水()

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问题:

1岁以下准备手术的婴儿,为防止因饥饿而产生酸中毒,可于麻醉前几小时喂少量的糖水()

A.2小时

B.4小时

C.6小时

D.6~8小时

E.8小时

考点:广西中医住院医师规范培训中医儿科学中医儿科学题库
题型:单项选择题

(本小题满分12分)

不等式mx2-mx+1>0,对任意实数x都成立,求m的取值范围。

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关于扁平颗粒胶片的叙述不正确的是()

A.提高影像锐利度

B.可做成非对称屏片体系

C.以碘化银为感光乳剂

D.可提高显定影速度

E.允许使用显影增强剂

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Passage OneA recent study indicates that the “short sleepers” had been more or less average in their sleep needs until the men were in their teens. But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities. These men tended to view their nightly periods of unconsciousness as bothersome interruptions in their daily routines.In general, these “short sleepers” appeared ambitious, active, energetic, cheerful, conformist in their opinions, and very sure about their career choices. They often held several jobs at once, or work fullor parttime while going to school. And many of them had a p urge to appear “normal” or “acceptable” to their friends and associates.When asked to recall their dreams, the “short sleepers” did poorly. More than this, they seemed to prefer not remembering. In similar fashion, their usual way of dealing with psychological problems was to deny that the problem existed, and then to keep busy in the hope that the trouble would go away.The sleep patterns of the “short sleepers” were similar to, but less extreme than, sleep patterns shown by many mental patients categorized as manic.The “long sleepers” were quite different indeed. According to the study, these young men had lengthy sleeps since childhood. They seemed to enjoy their sleep, protected it, and were quite concerned when they were occasionally deprived of their desired 9 hours of nightly bed rest. They tended to recall their dreams much better than did the “short sleepers”.Many of the “long sleepers” were shy, anxious, introverted, inhibited, passive, mildly depressed, and unsure of themselves (particularly in social situations). Several openly state that sleep was an escape from their daily problems.

Many “short sleepers” are likely to hold the view that ().

A.sleep is a withdrawal from the reality

B.sleep interferes with their sound judgment

C.sleep is the least expensive item on their routine program

D.sleep is the best way to deal with psychological troubles

题型:单项选择题

简述同期发情的机理。

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根据中国电信固定资产管理办法,钢筋混凝土结构的房屋折旧年限是()。

A.20年

B.30年

C.40年

D.50年

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