流行性乙型脑炎的主要病理变化不包括()。 A.蛛网膜下腔积脓 B.神经细胞变性坏死

题型:单项选择题

问题:

流行性乙型脑炎的主要病理变化不包括()。

A.蛛网膜下腔积脓

B.神经细胞变性坏死

C.淋巴细胞和单核细胞浸润并形成血管套

D.软化灶形成

E.小胶质细胞结节形成

考点:病理学(医学高级)病理学综合练习病理学综合练习题库
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已知m、n是直线,α、β、γ是平面,给出下列命题:

①若α⊥β,α∩β=m,n⊥m,则n⊥α或n⊥β;

②若αβ,α∩γ=m,β∩γ=n,则mn;

③若m不垂直于α,则m不可能垂直于α内的无数条直线;

④若α∩β=m,nm;且n∉α,n∉β,则nα且nβ.

其中正确的命题的序号是______.(注:把你认为正确的命题的序号都填上)

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冲击地压发生时,产生岩体震动,震动时间从()到()。

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_____ of them knows French, so I have to ask a fourth person for help.

A.Neither

B.Either

C.Both

D.None

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     What could be simpler than shaking fruit from a tree? Well, the job is a lot more difficult than you

might think. There is a right way and a wrong way to shake a fruit tree. And a person who is a good

apple tree shaker may not be a good cherry tree shaker. Different fruits take different shakes .

     As a rule, a slow hard shake is best. This makes the fruit fall much faster than a light; quick jiggle.

Most fruits have a set number of shakes per minute that will do the best job of getting them out of the

tree and onto the ground. To shake down plums, try shaking the tree four hundred times per minute,

moving the tree two inches at each shake. Experts say you'll get three times more fruit from the tree than

you will if you shake eleven hundred times per minute at one inch per shake. Cherries, because they are

smaller, need more shaking. A good rate of shaking seems to be about twelve hundred shakes per minute. Apples, like plums, need four hundred shakes.

     Of course, some people may choose to take no notice of all these expert directions for shaking fruit.

Keeping track of all the numbers can be enough to drive some people up a tree.

1. This passage is about ______.

A. eating plums                      

B. how to shake fruit from a tree

C. the value of fruits and vegetables      

D. ways in which people shake

2. A smaller fruit tree normally requires ______.

A. more people        

B. less shaking

C. two people per tree    

D. more shaking

3. The writer ends this story with ______.

A. a serious thought  

B. a suggestion for other ways to get fruit from trees

C. a joke            

D. a warning

题型:单项选择题

按《岩土工程勘察规范》规定,对于高频率泥石流沟谷,泥石流的固体物质一次冲出量为3×104m3时,属于下列()项类型的泥石流。()

A.Ⅰ1类

B.Ⅰ2类

C.Ⅱ1类

D.Ⅱ2类

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