晶闸管主要有()两种工作状态。 A.放大和饱和 B.截止和饱和 C.控制和放大 D.

题型:单项选择题

问题:

晶闸管主要有()两种工作状态。

A.放大和饱和

B.截止和饱和

C.控制和放大

D.阻断和导通

考点:车辆电工考试中级车辆电工中级车辆电工题库
题型:单项选择题

保税货物和减免税货物均属于海关监管货物,但海关对前者实行时效管理,对后者实行核销管理。( )

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增加蛋白脂酶活性,促进TG代谢

A.烟酸
B.环丙贝特
C.考来替泊
D.洛伐他汀
E.普罗布考

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阅读理解

     Lisa, a 25year old from Beijing, recently places a number of very unpleasant statements on the

Internet regarding the elderly.They include things like "don't  rely on others", "don't expect others to

help", "don't be talkative", and "dont't be so stubborn". The underlying message was that elderly

people should not take advantage of their old age to demand special favours from others, particularly

from the young.This of course flies_in_the_face_of the Chinese tradition of respecting the elderly.But,

in my opinion, Lisa's "requests" might not be totally unreasonable.Old people do sometimes behave

like they're "stubborn"and "talkative". Still, the young woman is rudely insensitive to why the elderly

behave that way.As people get old, they become increasingly weakened physically.So it's natural for

them to ask for more help from others.As their memories decline, they tend to be talkative because

they easily forget what has just been said.The American psychologists D. R.Atkinson and G. Hackett

said that the brain is characterized by flexibility.It has the ability (most pronounced up to the age of 12)

to change itself as a result of experience.But, as the brain ages, this flexibility decreases.As a result, the

elderly are often inflexible in their ways.

      Therefore, old people need real care and deserve to be taken care of.Many have devoted most of

their lives to the wellbeing of the family or social.Their aging is no reason for showing prejudice (偏见)

to them. According to Chinese tradition, older people are to be respected.As are Westerners.

     I live in the US for eight years, and in Hong Kong for 13.Never have I seen or heard anyone who

would openly tell old people "to behave themselves".

     We may encourage old people to be more selfreliant.But rudely demanding that they do so is ageism.

That's where the difference lies.

1. What does Lisa think of the elderly?

A. The elderly hate to rely on the others.

B. The elderly should take advantage of their old age.

C. They are not talkative but stubborn.

D. The elderly always demand special favors from the young.

2. The underlined part in the first paragraph can be replaced by"________".

A. expresses the apparent meaning of

B. shows disagreement with

C. deals with the surface meaning of

D. draws a conclusion from

3. What's the writer's attitude towards this problem?

A. The young woman is too sensitive to why the elderly behave that way.

B. The elderly naturally ask for more help from others, because their brain is characterized by flexibility.

C. The elderly are often inflexible in their ways, which makes the young suffer.

D. The elderly deserve to be taken care of and we shouldn't show our prejudice because of their aging.

4. The last three paragraphs really want to show that________.

A. we should respect the elderly

B. the people in the US or Hong Kong respect the older people

C. old people should be encouraged to be more selfreliant

D. different ideas about the elderly are allowed to exist

题型:单项选择题

开口度检查记录的是()

A.患者大张口时,上下唇缘之间的距离

B.患者大张口时,上下前牙牙槽嵴之间的距离

C.患者大张口时,上下后牙之间的距离

D.患者大张口时,患者鼻底至下唇的距离

E.患者大张口时,上下中切牙切缘之间的距离

题型:单项选择题

红细胞压积

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