在变量赋值方法I中,引数(自变量)E对应的变量是()。A、#19 B、#28 C、#27

题型:单项选择题

问题:

在变量赋值方法I中,引数(自变量)E对应的变量是()。

A、#19

B、#28

C、#27

D、#8

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已知f(x+199)=4x2+4x+3(x∈R),那么函数f(x)的最小值为______.

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阅读理解

     After moving to the United States, immigrant groups trying to fit in tend to choose high calorie fatty

foods in an attempt to appear more American, a new study finds. That's one reason why immigrants  

approach US levels of obesity within 15 years of moving to America.

     The researchers also did an experiment that measured whether or not the threat  of appearing un-

American influenced respondents'  food choices.  After being  questioned about their ability to speak

English, 75 percent of Asian-Americans  identified a typical American food as their favourite.  Only 25

percent of  Asian-Americans who had not been asked if they spoke English did the same.

     When their American identity was called into question during a follow-up study,  Asian-American

participants also tended to choose typical American dishes, such as  hamburgers and cheese sandwiches. In that experiment, 55 Asian-Americans were asked  to choose a meal from a local Asian or American

restaurant. Some participants were  told that only Americans could participate in the study. Those who  

chose the more  typical American fare ended up consuming an extra 182 calories, including 12 grams  of

fat and 7 grams of saturated fat (饱和脂肪).

     "People who feel like they need to prove they belong to a culture will change  their habits in an attempt

to fit in."said Sauna Cheryan, an author of the study  and assistant professor of psychology at the

University of Washington."If  immigrants and their children choose unhealthy American foods over

healthier  traditional foods across their lives, this process of fitting in could lead to poorer  health." Cheryan added.

     Social pressures, the study concluded, are at the heart of the problem. "In  American society today,

being American is associated with being white. Americans,  who don't fit this image even if they were

born here and speak English, feel that  pressure to prove that they're American. " said Cheryan.

1. The author wants to show that ______.                                      

A. more and more Asians enjoy high-calorie snacks                            

B. immigrants tend to eat American junk food to fit in                        

C. most Americans are at the risk of heart disease                            

D. all the American people have a bad eating habit                            

2. According to the survey,______.                                            

A. Asian-Americans care less about their health                              

B. 25 percent of Americans like junk food                                      

C. choosing food is related to Asian-Americans' situation                    

D. immigrants are forced to eat junk food                                      

3. The underlined word"fare"in Paragraph 4 most probably means"________".

A. food offered as a meal                                                      

B. a person taking a taxi                                                      

C. money spent on food                                                        

D. an arranged thing to do                                                    

4. According to Sauna Cheryan,________.                                      

A. what immigrants have done is ridiculous.                                    

B. American traditional foods are healthier                                    

C. immigrants risk their health in order to fit in                            

D. American culture affects immigrants deeply                                  

题型:单项选择题

新装机组的轴承振动不能大于()㎜。

题型:单项选择题

THDS-A红外轴温探测系统的探头标定的作用是()。

A.验证探头精度

B.验证黑体的温度

C.验证热靶标定的结果

D.验证系统标定的结果

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