二尖瓣狭窄患者可在哪个部位触及震颤A.心尖部 B.剑突下 C.胸骨右缘第3-4肋间

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问题:

二尖瓣狭窄患者可在哪个部位触及震颤

A.心尖部

B.剑突下

C.胸骨右缘第3-4肋间

D.胸骨右缘第2肋间

E.胸骨左缘第2肋间

考点:卫生资格考试(中初级)消化科基础知识消化科主治医师基础知识2
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分选指标主要包括()

A.分选速度

B.分选灵敏度

C.分选纯度

D.分选精密度

E.分选收获率

题型:单项选择题

Declan Mayes, President of the Music Buyers Association, is furious at a recent announcement by the recording industry regarding people downloading MP3 music files from the Internet as actual criminals.
A few parallels may be instructive. If someone copies an audio music cassette for their own private use, they are, strictly speaking, breaking the law. But recording companies have usually turned a blind eye to this practice because prosecuting the few people involved would be difficult, and the financial loss to the company itself is not considered significant. Now the Music Recording Association has announced that it regards individuals downloading music from the Internet as pirates, claiming that they damage the industry in just the same way. "The industry is completely overreaching; it’ll be a laughing stock," says Mayes. "They’re going to arrest some teenager downloading files in his bedroom and sue him for thousands of dollars! This isn’t going to frighten anyone into buying CDs".
Mayes may have a point. There is a general consensus that CD pirates should be subjected to the full wrath of the law, but few would see an individual downloading music for his or her own pleasure in the same light. However, downloading music files illegally is not as innocuous as making private copies of audio cassettes. The scratchy, distorted cassette copy is a poor version of the original recording, whereas an MP3 file is of high quality and can be stored on a CD, for example. It is this that makes the practice a powerful temptation for music fans, given the high cost of CDs.
What does Mayes think about claims that music companies could be forced out of business by people downloading music illegally That’s nonsense. Music companies are always whining about high costs, but that doesn’t prevent them from recording hundreds of CDs by completely unknown artists, many of whom are "packaged" by marketing departments to appeal to young consumers. The companies are simply hoping that one of these new bands or singers will be a hit, and although it can be expensive to promote new artists, the cost of manufacturing the CDs is actually very low.
This last point would appear to be the focus of resentment against music companies, a CD is far cheaper to produce than its price in the shops would indicate, and profit margins for the music companies are huge. An adult with a reasonable income may not object to paying £15 for a CD of classical music, but a teenager buying a CD by the latest pop sensation may find that price rather steep — especially since the latest pop sensation is almost certain to be forgotten within a few months. And while the recording industry can’t be held responsible for the evanescent nature of fame, given the teenage appetite for anything novel, it could lower the prices it charges — especially since technology is making CDs even cheaper to produce.
This is what Mayes hopes will happen. If the music industry stops exploiting the music-buying public, it can survive. Everyone would rather buy a CD, with an attractive jacket and booklet, than mess around downloading files, but the price has to be reasonable. The problem isn’t going to vanish if the industry carries on trying to make a quick profit. Technology has caught up with the music companies, and trying to fight it by taking people to court will only earn money for the lawyers.

What does Mayes think is at the root of the survival problem facing the music industry

A.(A) The unprecedented speed of technological development.

B.(B) Unrealistic legal advice and practice.

C.(C) Its failure to adopt an appropriate pricing strategy.

D.(D) The rapidly changing nature of contemporary music.

题型:单项选择题

将英国资产阶级革命中下列重大事件按时间先后顺序排列应是

①国王与新贵族之间爆发两次内战②建立了君主立宪制

③“光荣革命”④英国进入了共和时代[ ]

A.③①②④

B.①②③④

C.①④③②

D.④③①②

题型:单项选择题

烟草和烟草花叶病毒的遗传物质分别是()

A.都是DNA

B.都是RNA

C.DNA,RNA

D.RNA,DNA

题型:单项选择题

作为主权国家,中国派出四艘客轮赴越接运3553名在越南暴力事件中受冲击的中国企业员工。中国派船撤侨这主要说明我国在国际社会中享有()

A.独立权

B.平等权

C.自卫权

D.管辖权

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