金黄色葡萄球菌可通过以下途径污染食品()。A.食品加工人员、炊事员或销售人员带菌,造

题型:多项选择题

问题:

金黄色葡萄球菌可通过以下途径污染食品()。

A.食品加工人员、炊事员或销售人员带菌,造成食品污染

B.食品在加工前本身带菌

C.在加工过程中受到了污染,产生了肠毒素,引起食物中毒

D.熟食制品包装不严,运输过程受到污染

E.奶牛患化脓性乳腺炎或禽畜局部化脓时,对肉体其他部位的污染

考点:食品科学技术食品检验学食品检验学题库
题型:多项选择题
根据拼音写汉字或给加粗字注音。  
山lù(  )
诚(  )
窟long(  )
悔(  )
kuī(  )视
立(  )
按nà(  )不住 
鳞次比(  )
题型:多项选择题
动点M在抛物线2x2=y-1移动,则点A(0,-1)与点M的连线中点的轨迹方程为(  )
A.y=3x2B.y=8x2-1C.y=4x2D.y=4x2+1
题型:多项选择题

第四节阅读理解(20×2分)

James Langston Hughes finally arrived in New York on September 4, 1921 to attend Colombia University. Langston felt frustrated at Colombia due to the discrimination of his white classmates. His grades began to suffer and finally he left and looked for a job.

Job were still hard to come by for most blacks. He longed to work on a ship that would sail abroad. After much persistence, he headed to Africa on a freighter ( 货船 ). Hughes was disturbed by the African tribes’ lack of political and economical freedom. The Africans considered him white because of his brown skin and stranded dark hair. It was here that he met a mulatto (白黑混血)child who was ignored by the Africans and the whites. This was a sourced of inspiration for his play, “Mulatto”.

Hughes found work on another freighter and ended up in Pairs. While there he worked at a night club that featured southern cooking and jazz performers. While moving on to Italy, Hughed was robbed and left stranded (helpless) wanting to return to the United States. He tried to get a job on a ship heading for the U.S.A. but was told they only hired the white. In this depressed state of mind he wrote, “I, Too, Sing America.”

He returned to America and found the Harlem Renaissance was spreading across racial boundaries(种族界线). Many black poets and authors were now published in mainstream publications. Hughes was warmly welcomed by his peers (同辈)and recognized for the poetry he wrote while traveling. 

56. What inspired James Hughes to white the play “Mulatto”?

A. Neither the African nor the whites took care of a mulatto child he met.

B. The African did not like white people.

C. Blacks found it hard to find a decent job.

D. There was no political nor economical freedom in Africa.

57. How did Hughes pay for his trip from Africa to Paris?

A. He sold his poems.                 B. He got a job on ship.

C. He worked for a night club.     D. His African friends gave him some money.           58 . What happened to Hughes at Colombia University?

A. His white classmates were kind and helpful to him.

B. He was recognized as a promising poet.

C. He graduated with honors.   

D. He was very disappointed.   

题型:多项选择题

比转数为60~120时也轮外径最大切削量为()

A、10~15%

B、15~20%

C、10%以上

D、20%以上

题型:多项选择题

绵羊可能起源()。

A.摩弗仑羊(O.musimon)

B.阿而卡羊

C.盘羊(O.ammon)

D.羱羊

更多题库