PDB是蛋白质的()。A.分类数据库 B.结构数据库 C.模体数据库 D.结构域数据

题型:单项选择题

问题:

PDB是蛋白质的()。

A.分类数据库

B.结构数据库

C.模体数据库

D.结构域数据库

考点:生物学生物信息学生物信息学题库
题型:单项选择题

最终检验是对最终完成产品的检验,因此最终检验是( )。

A.产品交付使用的重要依据

B.产品使用寿命的决定因素

C.顾客满意调查关注的重点

D.产品质量检验的重点

E.市场占有份额的决定因素

题型:单项选择题

下列有关化学用语表示正确的是 

A.过氧化钠的电子式:

B.氯原子的结构示意图:

C.中子数为76、质子数为55的原子

D.次氯酸的分子式:HClO;次氯酸的电子式:

题型:单项选择题

腰椎间盘突出症下肢放射痛最常见于()

A.阴部神经分布区

B.闭孔神经分布

C.股神经分布区

D.坐骨神经分布

E.股外侧皮神经分布区

题型:单项选择题

"Children should not be left unsupervised (无人监督的) to play with a dog." say experts in this week's British Medical Journal. Their advice is part of a review aimed at doctors who deal with dog bites.

"Dog bites and maulings are a worldwide problem, particularly in children." write Marina Morgan and John Palmer. Every year 250,000 people who have been bitten by dogs attend minor injuries and emergency units in the United Kingdom, and half of all children are reportedly bitten by dogs at some time, boys more than girls.

Accurate death figures are difficult to obtain, but in the past five years, two to three cases a year have made news headlines.

Based on the latest medical evidence, they advise doctors how to examine and treat a patient presenting with a dog bite. They discuss the risk of infection and when to refer to specialist care. For travelers bitten abroad, they suggest assessing the risk of rabies(狂犬病).

In terms of prevention, they suggest that children should be taught to treat dogs with respect, avoid direct eye contact, and not tease them. They should be taught not to approach an unfamiliar dog; play with any dog unless under close supervision; run or scream in the presence of a dog; pet a dog without first letting it sniff you; or disturb a dog that is eating, sleeping, or caring for its babies.

"Dog owners also need to change their behavior", says Rachel Besser, a children's doctor and lifetime dog owner, in an article.

"It is clear that not all dog owners appreciate that children should not be left unsupervised with a dog", she says. Just as some parents are obliged to take parenting classes, she would like to see compulsive classes for expectant dog owners to teach them about the responsibilities of dog ownership. Educational programs are also needed to teach children about some precautionary (预防的) behaviors around dogs.

Finally, she would like to see animal doctors advising dog owners about bite prevention, and doctors promoting bite prevention when treating patients who have been bitten by dogs.   

小题1:Dog biting is a problem which _____.

A.only happens to a few children

B.should be paid attention to

C.only boys may meet with

D.has made news headlines小题2:The underlined word "they" in Paragraph 4 refers to "________" .

A. doctors         B. parents            C. experts            D dog owners

小题3:To avoid dog bites, a child should be taught to_____.

A.have direct eye contact

B.approach an unfamiliar dog

C.run or scream in the presence of a dog

D.leave a dog feeding itself小题4:What are Rachel Besser's words mainly about?

A.It's necessary to teach children how to raise dogs.

B.Children should be taught not to play with dogs.

C.All the dog owners would like to attend classes on caring for dogs.

D.Some dog owners would like children to be left unsupervised with a dog.小题5:Which of the following can be the best title for the passage?

A.Dogs, Dangerous To Children

B.Children Should Know Behaviors Around Dogs

C.Doctors, Treat Dog Bites Correctly

D.Never Leave Children Unsupervised With Dogs

题型:单项选择题

路线平面图中应包含()等内容。

A、设计路线

B、里程桩

C、竖曲线

D、平曲线

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