耐热性最强的食物中毒病病原菌是 A.致病性大肠杆菌 B.肉毒梭状芽胞杆菌 C.鼠伤寒

题型:单项选择题

问题:

耐热性最强的食物中毒病病原菌是

A.致病性大肠杆菌
B.肉毒梭状芽胞杆菌
C.鼠伤寒沙门氏菌
D.酵米面黄杆菌
E.副溶血性弧菌

考点:临床执业医师预防医学食物因素与健康(一)
题型:单项选择题

Brazil is a federation that consists of twenty-six states and one federal district. The biggest majority of Brazil’s population belongs to the Christian religion and almost all of them are Catholics. This is something Brazil inherited(继承) being Portugal’s colony(殖民地).

Historically, the country was a colony claimed by people from Portugal and this made Portuguese the official language. The Portuguese reached Brazil in 1500 and until that moment it was inhabited by semi-nomadic(半游牧的) people. The Portuguese changed Brazil into a country of slaves until 1800, when Maria I of Portugal came to live in Brazil. The Queen did not stay long in Brazil, but during the 20 years of royal presence a lot of changes occurred: commercial ports to United Kingdom were opened; Brazil stopped being isolated(孤立) from other countries. So at the moment of getting the independence on the 7th of September, 1822, Brazil already had the potential to develop. The Brazilian Empire, Pedro I, abolished slavery in 1888 in the face of Princess Isabel. A lot of European people started coming to Brazil and the industry of the country started working. In the 19th and the 20th century as it has been said above foreign people immigrated(移民) to Brazil and basically 5 million European and Japanese people became the residents of Brazil. The beginning of the 20th century was especially marked by the immigration of a lot of Asian people: Japanese, Korean and Chinese immigrants. As a matter of fact Japanese people do not immigrate a lot, and the fact that the Brazilian-Japanese people are the largest Japanese minority in the world does astonish greatly.

The majority of the cultural inherits of Brazil are actually Portuguese, due to the fact that Brazil was Portugal’s colony for a very long time. The southern states mainly consist of European population and the north and the northeast consist of a mixed population including Africans, Amerindians and Europeans. Most of this population is Roman Catholic. No other country in the world has the same amount of Catholics. The modern tendency of Brazil is the growing number of people calling themselves Protestants. Around 7.4% of the population don’t believe any god. Some Brazilians, especially in the northern states are mixed Africans who prefer following the traditional African religions. Only 1.8% of the population chose Buddhism, Islam or Judaism.

Though Brazil always tried to maintain democracy, it was failed several times by the dictatorship(独裁) of Getulo Vargas. This fact could not affect the political situation in the country.

小题1:Brazil was ruled by Portuguese about ______.

A.22 years

B.300 years

C.322 years

D.328 years小题2:Who might block the development of Brazil?

A.Maria I

B.Pedro I

C.immigrants

D.Getulo Vargas小题3:The writer mainly tells us the ______ of Brazil in the passage.

A.religion

B.history

C.culture

D.political situation小题4:Which of the following statements is NOT true?

A.Brazil was isolated from other countries when Maria I stayed there.

B.The industry of the country started working in 1888.

C.Brazil has the largest population of Catholics in the world.

D.Some people in Brazil don’t believe any god.小题5:It can be inferred that Brazil is a country with ________.

A.western culture

B.modern culture

C.traditional culture

D.mixed culture

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Dyn11接线配电变压器和Yyn0接线配电变压器相比较有哪些优点?

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某桩基基础平面、剖面和地基土层分布情况如习图4.3.2所示。土层分布:①杂填土,重度γ=17.8kN/m3;②淤泥质土,重度γ=17.8kN/m3,桩的极限侧阻力标准值qsik=20kPa,属高灵敏度软土;③黏土,重度γ=19.5kN/m3,qsik=60kPa,极限端阻力标准值qpk=2700kPa,土的压缩模量Es1=8.0MPa;④淤泥质土,地基承载力特征值=70kPa;压缩模量Es2=1.6MPa;在桩长深度范围内各土层的加权平均土层极限摩擦力标准值qsk=21kPa。作用于桩基承台顶面的竖向力标准值FK=3600kN,桩基承台和承台上土自重标准值GK=480kN。本桩基安全等级为丙级。

根据《桩基规范》计算:

基桩竖向承载力特征值R为()。

A.371kN

B.411kN

C.441kN

D.481kN

题型:单项选择题

国产面粉每袋的重量以哪种最多()

A.22磅

B.30磅

C.25公斤

D.30公斤

题型:单项选择题

两台吊车以不同速度抬吊是否可行,为什么?

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