与成年人相比婴幼儿对硝酸盐更为敏感,其原因之一是婴幼儿的() A.胃液的pH较成年人

题型:单项选择题 A1/A2型题

问题:

与成年人相比婴幼儿对硝酸盐更为敏感,其原因之一是婴幼儿的()

A.胃液的pH较成年人高,有利于硝酸盐还原菌的生长

B.胃液的pH较成年人低,有利于硝酸盐还原菌的生长

C.胃液的pH较成年人高,不利于硝酸盐还原菌的生长

D.胃液的pH较成年人低,有利于亚硝酸盐还原菌的生长

E.以上都不对

考点:公卫执业医师环境卫生学综合练习环境卫生学综合练习题库
题型:单项选择题 A1/A2型题

下列命题:①平行四边形对角线一定相等;②等腰梯形在同一底上的两个角相等;③四边形的内角和等于360°;④关于中心对称的两个图形是全等形,其中正确命题的个数有[ ]

A、1个

B、2个

C、3个

D、4个

题型:单项选择题 A1/A2型题

液压系统油箱透气孔处需设置()。

A.空气滤器

B.补油滤器

C.防溢油装置

D.A和B

题型:单项选择题 A1/A2型题

For a small town, Manhattan, Kansas has some big surprises. And one of them is the Holiday Inn Hotel, with rooms built around a swimming pool and a friendly family atmosphere.

The Holiday Inn is where Manhattan people often go for a special party, or a night out. A lot of them choose to eat in the brightly lighted restaurant near the pool. And many of them will be served by Ellen Logan, who has worked as a waitress here for more than two years.

Ellen, like most of the waitresses, is also a student. She comes from Nebraska, but she’s planning one day to be a veterinary surgeon, and to care for small animals. But in order to support herself at college, she works twenty hours a week at the Holiday Inn.

Ellen soon learned what every waitress finds out. Your best friend has a good pair of shoes. She paid forty -five dollars for hers, much more than she would usually spend. She’s discovered something else too. You don’t have to know much about food to be a good waitress, but you do have to know a lot about people.

“A lot of business people always stay here when they come to Manhattan,” she explains. “They like you to recognize them and remember their favorite dishes. But some couples come for a night out together. They just want to be left alone. Then there are people who can’t make up their minds. They look down the menu and say‘What do you suggest?’So I ask them how hungry they are. If they say, ‘Not very’, I suggest the salad bar, with soup, salad, bread, and a fruit plate. But if they say they’re very hungry, I suggest a Kansas Strip Steak, with potatoes or rice. You get salad and bread as well. It’s very nice. Real good value.”

Ellen may get tired feet sometimes, but at least she’s learning too much about people. She’ll probably make a good animal doctor, but if she find she doesn’t like it after all, she can always become a psychiatrist(心理医生)instead.

小题1:A good title for this passage is______________.

A.Ellen Logan at the Holiday Inn

B.American Holiday Inn

C.A Special Holiday Inn Hotel in Manhattan

D.How to Deal with People小题2:The word “a veterinary surgeon” probably means____________.

A.an animal doctor.

B.an animal trainer

C.a hotel manager

D.a food expert小题3:From the passage we can infer that_______________.

A.waitresses in the Holiday Inn are all students

B.waitresses are required to buy a good pair of shoes before they go to work

C.waitresses should be familiar with the food there

D.it is more important for the waitresses to know much about people than food小题4: According to the passage, which of the following statements is NOT true?

A.The Holiday Inn hotel is one of the big surprises in Manhattan.

B.Businessmen like to be recognized by the people and suggested what to eat.

C.Some couples prefer to be left alone without being bothered too much.

D.One of the reasons why people like to eat in the hotel is that it is full of a friendly atmosphere.

题型:单项选择题 A1/A2型题

以下不属于POY产品标识内容的是()。

A.丝饼内标签

B.纸管颜色

C.POY重量

D.大包装唛头

题型:单项选择题 A1/A2型题

为了防止病毒传染到保存的重要数据的3.5英寸软盘片上,正确的方法是()。

A、关闭盘片片角上的小方口

B、打开盘片片角上的小方口

C、将盘片保存到清洁的地方

D、不要将盘片与有病毒的盘片放在一起

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