淬透性好的钢,淬火后硬度一定很高。( )

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问题:

淬透性好的钢,淬火后硬度一定很高。( )

考点:机械基础技能鉴定考核初级机械技能鉴定全国职工职业技能鉴定考核机械基础初级
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男6岁,颏部外伤开口受限1年。检查开口度20mm,开口向左偏斜。X线片示左关节间隙模糊不清,髁突形态基本正常。最适宜的诊断是()

A.左关节骨性强直

B.右髁突良性肥大

C.左纤维性强直

D.左关节盘不可复性前移位

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患者,女性,43岁,体检时CT发现右肺中叶内侧段1.0cm×1.2cm结节,无分叶及毛刺征,邻近无胸膜牵拉征。无咳嗽、咳痰及咯血,无畏寒、发热及盗汗。既往有糖尿病史,否认结核病史。一直从事会计工作。查体:体温36.6℃,呼吸18次/分。血常规:WBC6.2×109/L,N61.4%,L25.6%,PPD(1:2000)试验:(-),ESR35mm/L,血CEA57,9μg/L,NSE7.Sμg/L。

18F-FDGPET/CT示右中肺结节放射性分布异常浓聚,SUVmax为5.6,全身其余探测部位显影未见异常。诊断可能性最大的是()。

A.肺鳞状细胞癌

B.肺腺癌

C.小细胞肺癌

D.炎性肉芽肿

E.结核球

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先天性巨结肠,肠管扩张的原因是肠壁肌间神经节细胞减少或缺如,下述哪一种肠壁节细胞减少、缺如是正确的()

A.扩张段近侧端肠壁

B.扩张段肠壁本身

C.扩张段远侧端肠壁

D.扩张段本身加近侧段

E.扩张段本身加远侧段

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Burkina Faso student teacher Hema Cecile has a lot more time to crack the books thanks to a recent initiative from the World Bank and the International Finance Corporation (IFC). The launch of the Lighting Africa program by the two organizations this year has made it possible for Cecile to swap kerosene lamps for a solar-powered LED lantern.

Lighting Africa is a $12 million project which intends to bring light to the poorest regions across sub-Saharan Africa. The program works with the lighting industry to develop clean, affordable lighting and energy solutions for millions without access to electric grids. Its aim is to accelerate the market and to develop education programs that inform off-grid populations currently dependent on costly, inefficient and hazardous fuel-based lighting about modern alternatives.

Cecile used to spend $3-4 a month on kerosene for her lamp. That is a large proportion of her earnings—like 70 percent of the population she lives on less than $2 a day. In the weeks since buying her lantern she has managed to read four books including Madame Bovary. by Gustave Flaubert and Emile Zola’s Germinal. She is among the most learned in a society which has the world’s lowest literacy rate, according to a 2007 UN Human Development Report. When she graduates next year she will teach in a local junior school She makes ends meet by holiday jobs as a cleaner and an IT trainer. To earn her daily ration of cornmeal she does shifts from May to September in a corn field.

The lanterns are designed to look like the kerosene ones they are replacing in order to increase adoption among the population. Each has a small solar panel on the top and costs an average $30, although some cost $100, depending on the size of the battery and the number of LED lights it contains.

Because of the large number of sunlight hours in Burkina Faso, the lamps can be relied on to work whenever needed. The battery life is 2-4 years, and can be replaced once they lose their storage capacity. The LED lights last 5-10 years.

Although it is barely out of its trial period the project, Chabanne said there are signs the project is a boon for the population in areas other than household savings and education. "There are fewer people reporting eye problems to the local hospital.

The purpose of the Lighting Africa program is to ()

A. do market research

B. provide new energy solutions

C. help African people to be independent

D. promote modernization across sub-Saharan Africa

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