如图,硬膜外间隙哪项不对() A.是一充满脂肪.血管和淋巴管的潜在间隙 B.在腰处最

题型:单项选择题

问题:

如图,硬膜外间隙哪项不对()

A.是一充满脂肪.血管和淋巴管的潜在间隙

B.在腰处最宽约5~6mm

C.在中胸部宽约3~5mm

D.在下颈部宽约1.5~2mm

E.上自枕骨大孔,下至骶2

考点:麻醉科住院医师椎管内麻醉和治疗椎管内麻醉和治疗题库
题型:单项选择题

产品在其生命周期中的哪一个阶段成本降到最低值,利润达到最高水平()。

题型:单项选择题

阅读理解。

     Why do 33% of the households in the USA have cats? And how do you explain why there are 16

million more pet cats than dogs? Yes, kittens are adorable (讨人喜欢的).Yes, they can grow up to be

good mousers and are very entertaining to watch.And yes, cats are independent and don't require as

much care as dogs.But research shows cats can also be caretakers for us and our families, improve our

health and teach us and our children to be kinder, gentler souls.

     Theodora Wesselman is 94 and has lived the past two years with her elderly cat, Cleo, at TigerPlace,

a retirement community in Columbia, Mo.Their enduring friendship is a classic example of how humans

and animals can become family and look out for each other.

     Wesselman visits other residents, and her children stop by, but Cleo is her best friend, she says.

They've been together nearly 21 years.

     "She sleeps on her own pillow right beside mine," Wesselman says."In the morning, she pecks on my

cheek to wake me up.It's really sweet.I pet her, tell her I love her and take her to the kitchen to prepare

her food."

     Research shows that being able to care for a pet improves our morale (士气;精神状态), helps

validate us and encourages us to take care of ourselves, says Rebecca Johnson, director of the

University of Missouri's Research Center for Human-Animal Interaction.The body of research is leading

more retirement communities and universities to roll out the welcome mat for pets.

1. According to the context, where do you think the sentence "They start and end the day together"

    should appear in the passage?

A. Between para.1 and para.2

B. Between para.2 and para.3

C. Between para.3 and para.4

D. Between para.4 and para.5

2.Which of the following words best describe the author's attitude towards keeping pet cats?

A. Favorable

B. Critical

C. Reserved

D. Doubtful

3. Why does the author take 94-year-old Theodora Wesselman as an example in the passage?

A. To show that the elderly like Theodora Wesselman in the USA have pet cats.

B. To suggest to what degree humans and pet cats can be caretakers for each other.

C. Because Theodora Wesselman has been living with a pet cat for the past two years.

D. Because Theodora Wesselman pets her cat Cleo and tells her she loves her.

4. What does "to roll out the welcome mat for pets" in the last paragraph imply?

A. To give a special welcome to pets.

B. To make the welcome mat flat on the ground for pets.

C. To open out the welcome mat for pets to sleep.

D. To wrap the welcome mat to make room for pets.

题型:单项选择题

中国周边外交工作,坚持与邻为善、以邻为伴,坚持睦邻、安邻、富邻,突出亲、诚、惠、容的理念。这体现了

A.独立自主是我国外交政策的基本目标

B.我国与周边国家建立全面合作的盟友关系

C.和平共处五项原则是我国对外关系的基本准则

D.维护世界和平与发展是我国外交政策的基本立场

题型:单项选择题

检测细胞表面黏附分子常用的方法是()

A.酶免疫发光法

B.酶免疫组织法

C.荧光免疫法

D.流式细胞仪测定法

E.时间分辨荧光免疫法

题型:单项选择题

流行病学实验研究最重要的优点是()。

A.流行病学实验研究可以提高评价、预防和治疗等方面干预措施的正确性

B.实验者可决定干预措施的方案

C.盲法试验可提高研究对象的依从性

D.随机化分组可提高实验组和对照组的可比性

E.可以控制研究过程的偏倚

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