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【简答题】
As prices and building costs keep rising, the “do-it-yourself” (DIY) trend (趋势) in the U.S. continues to grow. “We needed furniture(家具) for our living room.” Says John Ross, “and we just didn’t have enough money to afford it. So we decided to try making a few tables and chairs.” John got married six months ago, and like many young people these days, they are struggling to make a home at a time when the cost of living is very high. The Rosses took a 2-week course for $ 280 at a night school. Now they build all their furniture and make repairs around the house. Jim Hatfield has three boys and his wife died. He has a full-time job at home as well as in a shoe making factory. Last month, he received a car repair bill for $ 420. “I was deeply upset about it. Now I’ve finished a car repair course, I should be able to fix the car by myself.” John and Jim are not unusual people. Most families in the country are doing everything they can to save money so they can fight the high cost of living. If you want to become a “do-it-yourself”, you can go to DIY classes. And for those who don’t have time to take a course, there are books that tell you how you can do things yourself. 小题1:We can learn from the text that many newly married people _______. A.find it hard to pay for what they need B.have to learn to make their own furniture. C.take DIY courses run by the government. D.seldom go to a department store to buy things 小题2:John and his wife went to evening classes to learn how to _____ A.run a DIY shop B.make or repair things C.save time and money D.improve the quality of life. 小题3: When the writer says Jim has a full-time job at home, he means Jim ____ A.makes shoes in his home B.does extra work at night C.does his own car and home repairs D.keeps house and looks after his children
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【单选题】设随机变量X与Y相互独立且都服从参数为λ的指数分布,则下列随机变量中服从参数为2λ的指数分布的是______.
A.
X+Y
B.
X-Y
C.
max(X,Y)
D.
min(X,Y)
【判断题】手绘木质材质时,可以结合木材的纹理表现出山水纹、平行纹理等。
A.
正确
B.
错误
【单选题】设随机变量X与Y相互独立且都服从参数为λ的指数分布,则下列随机变量中服从参数为2λ的指数分布的是( ).
A.
X+Y
B.
X—Y
C.
max(X,y)
D.
rain(X,Y)
【判断题】计划工作的任务和内容具体概括为6个方面,即5H1W。()
A.
正确
B.
错误
【单选题】下肢的浅静脉有
A.
胫前静脉
B.
贵要静脉
C.
腘静脉
D.
大隐静脉
E.
股静脉
【判断题】会计核算和监督的内容是企业发生的所有经济活动。
A.
正确
B.
错误
【判断题】乘数作用的大小要受到过剩生产能力大小的制约。( )
A.
正确
B.
错误
【简答题】设随机变量X与Y相互独立,且都服从参数等于P的两点分布,函数 ,求二维随机变量(X,Z)的联合分布律。当p取何值时,X与Z相互独立?
【多选题】设随机变量X与Y相互独立,都服从参数为p=0.6的0-1分布,则有
A.
P(X = Y)=0.52
B.
P(X ¹ Y)=0.48
C.
P(X = Y)=0
D.
P(X = Y)=0.5
E.
X = Y
F.
P(X = Y)=0.48
G.
P(X ¹ Y)=0.52
H.
P(X = Y)=1
【单选题】一份完整的计划应包括“5W1H”这六个方面的内容,下列对“5W1H”中W,H的解释错误的是()。
A.
“5W1H”是指“What”、“Why”、“Who”、“Where”、“When”、“How”
B.
W之一是“Who”代指“为谁来做”
C.
W之一是“Why”代指“为什么做”
D.
H是“How”代指“计划实施的具体方法和手段”
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