钢管按生产方式可分为无缝钢管和()两类。

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问题:

钢管按生产方式可分为无缝钢管和()两类。

考点:轧钢工考试高级轧钢工高级轧钢工题库
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32P治疗原发性血小板增多症通常给药后出现血小板下降的时间为()。

A.1周

B.2周

C.4周

D.6周

E.12周

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治疗干血劳应用下面哪一方法()

A.补气养血

B.补阴生津

C.补肾生髓

D.祛瘀生新

E.活血化瘀

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漫画《刚出壳的鸡》给我们的哲学启示是 :(   )

A.要学会用联系的观点看问题

B.要敢于破除一切思想观念的束缚

C.要果断抓住时机促成质变

D.要看到事物的发展是前进的、上升的

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有人说:民营企业容易排外,产生接班人问题,……;也有人说:国有企业同样存在这类问题。在实践中,既可以找到经营业绩良好的民营企业与国有企业,也可以找到经营业绩欠佳的民营企业与国有企业。对于这些现象,你认为以下哪条描述最为恰当?()

A.对企业经营成败经验与存在的问题无法简单地按民营或国有的性质进行划分。

B.民营企业与国有企业存在着共同的管理问题,可以采取相同的办法来解决。

C.民营企业与国有企业都有成功与失败两方面的例子,可见企业性质并不重要。

D.只要能够充分学习成功经验并吸取失败教训,任何企业都能取得良好业绩。

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It took nearly eight years for the new heart drug BiDil to win approval from the Food and Drug Administration—and it won that approval only after its maker, a small company called NitroMed, repositioned it as a treatment earmarked for African Americans. But if NitroMed thought getting BiDil past the FDA was hard, wait until it tries marketing the drug to its target group. Even during its clinical trials, BiDil ran into resistance. Says Dr. Theodore Addai of Nashville’s Meharry Medical College, who had to enlist black patients for a 2001 trial: "We had to try to persuade them that this was not another Tuskegee. "
He’s referring to the infamous Tuskegee experiment, conducted by the U. S. government from the 1930s to the early ’70s, during which doctors denied nearly 400 black men in Alabama treatment for syphilis in order to observe the disease’s long-term effects. The scars left by Tuskegee are slow to heal in the African-American community, and many blacks remain deeply suspicious of anything that approaches the emotionally charged intersection of race and medicine.
The AIDS epidemic is a prime example. According to the Centers for Disease Control, blacks account for 50% of new HIV and AIDS cases in the U. S., although they represent only 13% of the population. African-American women are especially at risk; their annual AIDS case rate is 25 times that of white women. Citing those statistics, significant numbers of black Americans subscribe to various AIDS conspiracy theories. According to a poll conducted for the Rand Corp. last January, 53% of black Americans surveyed believe there is a cure for AIDS that is being withheld from the poor, and 15% believe the disease was created by the government in order to control the black population. Phil Wilson, director of the Black AIDS Institute, says such attitudes are hampering his work with antiretroviral drugs, "The most common thing we hear with AIDS drugs is, ’Oh, they’re going to experiment on you,’" he says. "The most cited example is the Tuskegee trials, even though most of us don’t even know what Tuskegee was."
Tuskegee aside, the discrepancies in medical care between blacks and whites in the U. S. are real and persistent and not explained by differences in economic status alone. In March 2002 a study by the Institute of Medicine at the National Academy Of Sciences found that even after controlling for such factors as income and insurance coverage, minorities in the U. S. routinely received lower-quality health care than whites. Matters were not improved in the early ’90s when some Governors and state officials tried to mandate the use of a newly approved five-year birth control device called Norplant as a way of curbing teenage pregnancy and reducing welfare costs, a campaign that instantly acquired racial overtones.
In that context, it’s not surprising that the idea behind BiDil—the first drug approved for a specific race—has been controversial from the start. The drug is actually a combination of two older, generic medicines. When it was first tested on the general population as a treatment for congestive heart failure—a gradual weakening of the heart-the FDA ruled that the results were not statistically significant. It was only when the drug was retested on patients who identified themselves as African Americans that tangible benefits emerged: a 43% reduction in the death rate and a 39% reduction in hospitalizations.
Critics point out that while the trials showed that BiDil saved lives, they failed to show whether the drug worked better in blacks than in other groups or that it worked only in blacks. "Race is a placeholder for something else," says Dr. Clyde Yancy, a cardiologist at the University of Texas Southwestern Medical Center and a BiDil investigator. "And that’s probably a mix of biomarkers, demographics and genes."
NitroMed declined to comment on its marketing strategy, but some doctors voiced concern that the company remains sensitive to African-American fears. "I hope they market BiDil with great caution and care," says Gary Puckrein, executive director of the National Minority Health Month foundation. "This really isn’t a race drug but a drug that works in specific populations for reasons we don’t yet understand.\

What is Tuskegee Why did the doctors have to tell black patients "that this was not another Tuskegee" when they were trying BiDil on them(para. 1)

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