对原料库存放场地进行划分是为了坯料顺利入库。

题型:判断题

问题:

对原料库存放场地进行划分是为了坯料顺利入库。

考点:轧钢工考试轧钢工高级技师轧钢工高级技师题库
题型:判断题

用120减去65的差乘24,积是多少?

题型:判断题

新的疫苗或预防药物在推广应用前必须的流行病学实验是()。

A.通过毒理学鉴定证明其对人体无害

B.通过现场试验考核其实际预防效果

C.通过动物实验证实其效果

D.证明其无严重副作用

E.经实验室检验无有害的附加剂

题型:判断题

小血管破裂出血,在止血过程中发挥作用的是()。

A.血管收缩

B.血小板粘集

C.凝血酶形成

D.纤维蛋白原转变为纤维蛋白

E.血小板形态改变

题型:判断题

要实现农业持续稳定发展,保障国家粮食安全,根本出路在(),必须加强(),完善农业技术推广工作的体制机制,加快科技成果推广转化。

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Most critical plot points in Harry Potter and the Sorcerer’s Stone came from J. K. Rowling’s imagination, but Flamel and his powerful pebble were legendary long before Harry went to Hogwarts. The 14th century alchemist created the philosoper’s stone (called "sorcerer’s" in U.S.editions of Potter ), with which he turned mercury to gold and gained eternal life. But Flamel’s tale—like his stone and his science—was no more real than a magic.

The philosopher’s stone was the key to alchemy, the medieval predecessor to chemistry that aimed to cure all illnesses, make the elixir of life, and transmute base metals into gold. The last made perfect sense at the time. The Aristotelian theory of elements stated that all things consisted of fire, air, water, and earth. So a little shift in one metal’s composition could create gold.

Flamel was renowned as an alchemical success. In 1382, after 25 years of studying an ancient book by "Abraham the Jew", he is said to have produced the philosopher’s stone. His texts, notably a deconstruction of the "Abraham" work, were standard reading for aspiring scientists like Isaac Newton.

Many alchemists believed Flamel faked his 1418 death and that of his wife. Rumored sightings in the 18th century placed them at the Paris Opera. As late as 1816 there were reports of people searching Flamel’s former house for secrets of the stone.

Contemporary historians say, a Nicolas Flamel did live in Paris in the 1300s and endowed many churches and hospitals with his wealth. But he was no alchemist. "He got his money in pedestrian ways—his wife’s earlier marriages, real-estate speculation," says lawrence Principe, author of The Aspiring Adept. Anachronisms, style of language, and the lack of earlier copies indicate that none of "his" writings originated prior to the 1500s.

"This sort of thing happens in alchemy," says Bill Newman, author of alchemical history Gehennical Fire. When an alchemist couldn’t back up his ideas, he might publish them in the guise of a "lost" work. Flamel’s wealth made a good candidate for alchemical identity theft.

Flamel writings and sightings faded with alchemy’s prestige. And the closest anyone’s come to the philosopher’s stone is Rowling. In her hands, it has yielded not just gold but eternal (shelf) life as well.

The passage shows that alchemy in the medieval time ().

A. established modern chemistry

B. cured all the diseases

C. turned base metals to gold

D. was taken as somewhat justifiable

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