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[单选题]
HadoopStreaming中combiner的作用是（)。
A.减少网络传输
B.加快传输速率
C.增加网络传输
D.减少资源损耗
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题目内容
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如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.减少网络传输
B.加快传输速率
C.增加网络传输
D.减少资源损耗
如果结果不匹配，请 联系老师 获取答案
更多“HadoopStreaming中combiner的作用是()…”相关的问题
A．Use some special shampoo.
B．Wear a wig.
C．Don't try to comb hair over the bald or thin patch.
D．Go to the doctor for advice.
A.comb
B.dumb
C.numerous
D.overcome
Banks manage their assets considering______.
A．risk
B．liquidity
C．earnings
D．some optimum combination of the above
A．Changing the way of spraying crops.
B．Buying some outdoor insect lamps.
C．Using a combination of three insecticide.
D．Trying to attract new insects onto the crops.
听力原文：M: Hello.
W: Hello, welcome to "Advice" radio program. What's your name？
M: Jim.
W: What's your problem？
M: Er...well I'm er...beginning to lose my hair. Er, I went to the doctor, but he just said there was nothing I could do about it. He said it was probably hereditary. My father was bald by the time he was thirty.
W: And how old are you？
M: Me？ I'm twenty-eight.
W: And are you losing a lot of hair then？
M: Well, it comes out a lot when I comb my hair and you can see a thin part on the top of my head,
W: Does that really worry you, Jim？
M: Well, I don't like it. It's old, you know, looks old. I don't want to look like a middle-aged man at twenty-eight. And I wonder if there is some special shampoo I should use, and if you could tell me one that I should buy, something like that, you know, to stop it getting worse.
W: Well, you know, Jim, to be honest with you there's not really a lot you can do about it, actually, I'm afraid. I mean, baldness is one of those things that, in my experience, you just have to try to accept. Some men find it more difficult to accept baldness than others. There is one piece of advice, though, Jim, and that's don't try to comb your hair over the bald or thin patch. Whatever you do, don't comb it over because that usually looks ridiculous. And the other thing that usually looks ridiculous is a man with a wig, that is, the false hairpiece. Don't let anyone persuade you to buy one of those false hairpiece things, because they usually look much worse than a bald man. I actually think bald men can look very attractive. My husband is bald and I think it really suits him.
(23)
A．It's hereditary.
B．The shampoo he used caused it
C．He combs his hair too much.
D．He is old enough to lose hair.
听力原文：M: Hello.
W: Hello, welcome to "Advice" radio program, what's your name？
M: Jim.
W: What's your problem？
M: Er...well I'm er...beginning to lose my hair. Er, 1 went to the doctor, but he just said there was nothing I could do about it. He said it was probably hereditary. My father was bald by the time he was thirty.
W: And how old are you？
M: Me？ I'm twenty-eight.
W: And are you losing a lot of hair then？
M: Well, it comes out a lot when I comb my hair and you can see a thin part on the top of my head.
W: Does that really worry you, Jim？
M: Well, I don't like it. It's old, you know, looks old. I don't want to look like a middle-aged man at twenty-eight. And I wonder if there is some special shampoo I should use, and if you could tell me one that I should buy, something like that, you know, to stop it getting worse.
W: Well, you know, Jim, to be honest with you there's not really a lot you can do about it, actually, I'm afraid. I mean, baldness is one of those things that, in my experience, you just have to try to accept. Some men find it more difficult to accept baldness than others. There is one piece of advice, though, Jim, and that's don't try to comb your hair over the bald or thin patch. Whatever you do, don't comb it over because that usually looks ridiculous. And the other thing that usually looks ridiculous is a man with a wig, that is, the false hairpiece. Don't let anyone persuade you to buy one of those false hairpiece things, because they usually look much worse than a bald man. I actually think bald men can look very attractive. My husband is bald and I think it really suits him.
(23)
A．It's hereditary.
B．The shampoo he used caused it.
C．He combs his hair too much.
D．He is old enough to lose hair.
There is a great variety of observational studies. A researcher stands near the entrance【C8】______ a theatre and observes the approximate age and sex of patrons【C9】______ the theatre during certain times of the day and days of the【C10】______. Researchers comb through the garbage【C11】______ of Arizona residents to【C12】______ what is being thrown【C13】______ and, by inference from packages,【C14】______ is being bought. Toy manufacturers watch【C15】______ behind one-way mirrors to see how children【C16】______ to and play【C17】______ prototypes(样品) of toys they are thinking of introducing. Observers in public places -- airports,【C18】______ offices -- watch to see【C19】______ subjects read newspapers and magazines. Researchers call【C20】______ households and take a "pantry audit" to learn the quantity and brands of certain items on the kitchen or bathroom shelves.
【C1】
A．notice
B．see
C．discover
D．watch
听力原文： When my husband was promoted, we put our house up for sale. Three weeks later, it was still on the market. I became a busy housekeeper. Every room had to be kept tidy and dishes had to be washed and put away when used. Then one day, the door bell rang unexpectedly at 8 am. Sleepily I opened the door and saw our agent standing there with a couple from New York. "There was no time to call," he explained, "the couple has to catch a plane home." The three people made their way past the dirty breakfast dishes on the kitchen table and entered a bedroom with unmade beds. As I retreated into a bathroom to comb my hair, I heard the man say something to his wife. Then they both laughed. Two days later the agent phoned to tell me that the couple had bought the house. He repeated what the couple had said when he handed over the check the following day, "That house has a warm lived-in feeling just like ours."
(33)
A．She wanted to move to New York.
B．Her husband had lost his job.
C．Her husband had got a higher position.
D．She wanted to have a wider house.
C
Millions of Americans survive(生存)in low-paying jobs. The Working Poor(319 pages) , by David Shipler, a Pulitzer-winning former reporter, shows just how barely they get by. In his tour around the world of low-paying jobs, Shipler describes a kind of domino model of a downward cycle. " Poor housing can worsen a child ' s illness, which leads to a call for a doctor, which results in a medical bill that cannot be paid, which ruins a credit record, which raises the in- terest rate on an auto loan(货款) , which results in the buying of a used car, which causes a mother to be late for work, which limits her pay raise and earning ability, which keeps her to poor hous-ing, which worsens the illness, and so on. "
What Shipler aims to do in the book is to produce a picture of all of those dominoes at once, the problems that keep the working poor on the edge of household disaster(灾难). As the condi-
tions for the lowest-paid workers keep worsening, he writes, " the low-paid employees have been
testing the American belief in hard work. "
To those who don ' t quite make it from paycheck to paycheck, convenience stores in poor neighborhoods lend money at interest rates of about 20% for a two-week loan. If that can ' t be
repaid, it' s gladly rolled over-for another 20% . In the space of a few months, he or she owes
twice as much in interest as he borrowed.
Shipler doesn ' t place all the blame on society. The people he meets often lack the soft skills that employers require, like showing up on time, following directions, even knowing how to comb their hair. To be sure, they need better schools and medical care, but they also need to know better than to use their hard-earned checks to get drunk and disorderly, or go in for ill-advised sex and foolish spending.
64. The main purpose of this text is to _______ .
[ A] show how the poor can improve their living conditions
[ B ] discuss the reasons why many Americans are poor
[ C ] introduce David Shipler ' s book about the poor
[ D] describe how a reponer has become a writer
