革兰阳性菌与革兰阴性菌的细胞壁肽聚糖结构主要区别在于() A.聚糖骨架 B.四肽侧链

题型:单项选择题 A1/A2型题

问题:

革兰阳性菌与革兰阴性菌的细胞壁肽聚糖结构主要区别在于()

A.聚糖骨架

B.四肽侧链

C.五肽交联桥

D.β-1,4糖苷键

E.N-乙酰葡糖胺与N-乙酰胞壁酸

考点:临床医学检验技术(师)细菌的形态结构与功能细菌的形态结构与功能题库
题型:单项选择题 A1/A2型题

锡克试验的原理是()

A.Ⅱ型变态反应

B.Ⅰ型变态反应

C.Ⅲ型变态反应

D.Ⅳ型变态反应

E.中和试验

题型:单项选择题 A1/A2型题

需进一步作糖耐量试验:

A.髂嵴下2横指
B.髂嵴上2横指
C.髂嵴水平
D.胆囊区
E.原来的位置

题型:单项选择题 A1/A2型题

男性,58岁,右侧腹股沟斜疝病史3年,今晨便后疝突出,不能回纳,局部疼痛,伴恶心,无呕吐6小时就诊。

最可能是

A.右侧睾丸鞘膜积液并感染

B.右侧阴囊急性蜂窝织炎

C.睾丸恶性肿瘤并内出血

D.肠扭转

E.右腹股沟斜疝嵌顿

题型:单项选择题 A1/A2型题

有关普通脚手架下面有几种说法,从中选出错误的一项()。

A、单排脚手架立杆离墙1.5米为宜,且不得大于1.8米,双排脚手架里皮立杆离墙400—500毫米,外边立杆离墙以2米为宜。

B、砌石脚手架宽度不小于2米,立杆纵向间距应适当加密。

C、当进行室内作业时,可将脚手架直接支设在砼楼板上。

D、装饰脚手架立杆间距不得大于2米,横杆步距以1.7米为宜。

题型:单项选择题 A1/A2型题

阅读理解。

  If you were to walk up to Arthur Bonner and say, "Hey, But

terfly Man, "his face would break into a smile. The title suits him.

And he loves it.

     Arthur Bonner works with the Palos Verdes blue butterfly (蝴

蝶) ,once thought to have died out. Today the butterfly is coming

back-thanks to him. But years ago if you'd told him this was what

he'd be doing someday,he would have laughed," You're crazy. "As

a boy,he used to be "a little tough guy on the streets". At age thirteen,

he was caught by the police for stealing. At eighteen ,he land-

ed in prison for shooting a man.

      "I knew it had hurt my morn," Bonner said after he got out of

prison. "So I told myself I would not put my mom through that pain

again. "

     One day he met Professor Mattoni, who was working to rebuild

the habitat(栖息地) for an endangered butterfly called El Segundo

blue.

     "I saw the sign' Butterfly Habitat' and asked, ' How can you

have a habitat when the butterflies can just fly away?' "Bonner recalls.

"Dr. Mattoni laughed and handed me a magnifying glass (放

大镜) ,' Look at the leaves. ' I could see all these caterpillars (蝶的幼

虫)on the plant. Dr. Mattoni explained, 'Without the plant,

there are no butterflies. '"

     Weeks later, Bonner recei.ved a call from Dr. Mattoni, who told

him there was a butterfly that needed help. That was how he met the

Palos Verdes blue. Since then he's been working for four years to

help bring the butterfly back. He grows astragalus, the only plant

the butterfly eats. He collects butterflies and brings them into a lab

to lay eggs. Then he puts new butterflies into the habitat.

     The butterfly's population, once almost zero, is now up to 900.

For their work, Bonner and Dr. Mattoni received lots of awards. But

for Bonner,he earned something more:he turned his life around.

     For six years now Bonner has kept his promise to stay out of

prison. While he's bringing back the Palos Verdes blue, the butterfly

has helped bring him back, too.

1. When he was young, Arthur Bonner _____.   

A. broke the law and ended up in prison

B. was fond of shooting and hurt his morn

C. often laughed at people on the streets

D. often caught butterflies and took them home

2. Bonner came to know the Palos Verdes blue after he______.  

A. found the butterfly had died out

B. won many prizes from his professor

C. met Dr. Mattoni, a professor of biology

D. collected butterflies and put them into a lab

3. From the last sentence of the text, we learn that raising butterflies has_______.  

A. made Bonner famous

B. changed Bonner's life

C. brought Bonner wealth

D. enriched Bonner's knowledge

4. Which of the following would be the best title for the text?   

A. A Promise to Morn.

B. A Man Saved by Butterflies.

C. A Story of Butterflies.

D. A Job Offered by Dr. Mattoni.

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