设随机变量X和Y的联合密度为 则PX>1,Y>1=______.

题型:填空题

问题:

设随机变量X和Y的联合密度为


则PX>1,Y>1=______.

考点:普通考研考研数学(一)考研数学一
题型:填空题

看一看,找一找,填一填,比比谁的眼力好。

Kim: I'm hungry. I want to eat ______________.         

Sue: I'd like some ______________.             

Lily: I'd like a ______________.         

Mike: I don't like fish. I like ______________.                 

题型:填空题

仓库发出材料一批,计62450元,其中生产a产品耗用30000元,生产b产品耗用25000元,车间一般耗用7000元,企业管理部门耗用450元。(2分)

题型:填空题

介质温度在250~300℃时,可选用以下哪种保温材料()

A.矿渣棉制品

B.水玻璃珍珠岩制品

C.水泥珍珠岩制品

D.耐醛玻璃棉制品

E.聚氯乙烯制品

题型:填空题

You’re busy filling out the application form for a position you really need, let’s assume you once actually completed a couple of years of college work or even that you completed your degree. Isn’t it tempting to lie just a little, to claim on the form that your diploma represents a Harvard degree Or that you finished an extra couple of years back at State University
More and more people are turning to utter deception like this to land their job or to move ahead in their careers, for personnel officers, like most Americans, value degrees from famous schools. A job applicant may have a good education anyway, but he or she assumes that chances of being hired are better with a diploma from a well-known university. Registrars at most well-known colleges say they deal with deceitful claims like these at the rate of about one per week.
Personnel officers do check up on degrees listed on application forms, then. If it turns out that an applicant is lying, most colleges are reluctant to accuse the applicant directly. One Ivy League school calls them "impostors". Another refers to them as "special cases". One well-known West Coast school, in perhaps the most delicate phrase of all, says that these claims are made by "no such people".
To avoid complete lies, some job-seekers claim that they "attended" or "were associated with" a college or university. After carefully checking, a personnel officer may discover that "attending" means being dismissed after one semester. It may be that "being associated with" a college means that the job-seeker visited his younger brother for a football weekend. One school that keeps records of false claims says that the practice dates back at least to the turn of the century--that’s when they began keeping records, anyhow.
If you don’t want to lie or even stretch the truth, there are companies that will sell you a fake diploma. One company, with officers in New York and on the West Coast, will put your name on a diploma from any number of nonexistent colleges. The price begins at around twenty dollars for a diploma from "Smoot State University". The prices increase rapidly for a degree from the "University of Purdue". As there is no Smoot State and the real school in Indiana is properly called Purdue University, the prices seems rather high for one sheet of paper.

As used in the first line of the second paragraph, the word "utter" means ______.

A. thorough

B. fundamental
C. ultimate

D. decisive

题型:填空题

叶天士认为:热病“通阳最难”,其意是指对湿温病的治疗:().

A.不可过用寒凉

B.不可过用苦温

C.不可过用温补

D.不可化气利湿

E.不可通利小便

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