杆菌(bacillus)

题型:名词解释

问题:

杆菌(bacillus)

考点:疾病预防控制知识竞赛微生物检验微生物检验题库
题型:名词解释

I will never forget the year I was about twelve years old. My mother told us that we would not be (16) Christmas gifts because there was not enough money. I felt sad and thought, "What would I say when the other kids asked what I’ d (17) " Just when I started to (18) that there would not be a Christmas that year, three women (19) at our house with gifts for all of us. For me they brought a doll. I felt such a sense of (20) that I would no longer have to be embarrassed when I returned to school. I wasn’t (21) . Somebody had thought (22) of me to bring me a gift.

Years later, when I stood in the kitchen of my new house, thinking how I wanted to make my (23) Christmas there special and memorable, I (24) remembered the women’s visit. I decided that I wanted to create that same feeling of (25) for as many children as I could possibly reach.

So I (26) a plan and gathered forty people from my company to help. We gathered about 125 orphans (孤儿) at the Christmas party. For every child, we wrapped colorful packages filled with

toys, clothes, and school supplies, (27) with a child’ s name. We wanted all of them to know they were (28) Before I called out their names and handed them their gifts, I (29) them that they couldn’t open their presents (30) every child had come forward. Finally the (31) they had been waiting for came as I called out, "One, two, three. Open your presents!" As the children opened their packages, their faces beamed and their bright smiles (32) up the room. The (33) in the room was obvious, and (34) wasn’ t just about toys. It was a feeling, and the feeling I knew (35) that Christmas so long ago when the women came to visit. I wasn’t forgotten. Somebody thought of me. I matter.

29().

A. reminded

B. guaranteed

C. convinced

D. promised

题型:名词解释

如图所示,质量为m的木块放在光滑的水平桌面上,用轻绳绕过桌边的定滑轮与质量为M的砝码相连,已知M=2m,让绳拉直后使砝码从静止开始下降.若砝码底部与地面的距离为h,砝码刚接触地面时木块仍没离开桌面,此时木块的速率为

A.

B.

C.

D.

题型:名词解释

食品安全评价的急性毒性试验包括()。

A.LD50

B.联合急性中毒

C.一次最大耐受量实验

D.30天喂养试验

E.传统致畸试验

题型:名词解释

可导致左心室射血受阻,引起左心室排血量显著降低,出现心绞痛、眩晕、甚至猝死的心脏瓣膜病为

A.二尖瓣狭窄
B.二尖瓣关闭不全
C.主动脉瓣狭窄
D.主动脉瓣关闭不全
E.肺动脉瓣关闭不全

题型:名词解释

试分析染料泳移的原理,影响染料泳移的因素,染料泳移易违成的疵病及解决染料泳移可采取的措施。

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