的共轭碱常是 ① 。

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问题:

的共轭碱常是

考点:普通考研10医学中药专业硕士无机化学5
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可控硅调光器的抗干扰扼流圈的电流上升时间是以()单位的。

A.秒

B.毫秒

C.微秒

D.纳秒

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电冰箱的压缩机是自动间歇式工作的(即工作一段时间停止一段时间,再工作再停止,如此循环)。某电冰箱铭牌有关参数如下表所示,电冰箱压缩机在标定耗电量下工作时,一天实际工作____________h;若电冰箱每次从启动到停止工作的时间都是12min,则该电冰箱的压缩机每天启动____________次。

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A3后BCM的功能有()

A.后窗除霜

B.后玻璃升降

C.后雾灯

D.后倒车雷达

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《水调歌头·明月几时有》是宋朝著名文学家______的作品.*

A.岳飞

B.王安石

C.苏轼

D.李清照

题型:填空题

Egyptian wine has an extensive history within the history of Egyptian civilization. Grapes were not (1) to the landscape of Egypt, rather the vines themselves are (2) to have been imported from the Phoenicians, (3) the actual origins remain in (4) . What is known, is that (5) the third millennium BC, Egyptian kings of the first (6) had extensive wine cellars, and wine was used extensively in the temple ceremonies. The main (7) of wine in Egypt, took place between the king, nobles, and the priests in temple ceremonies, and is (8) by numerous painted relief’s, and other (9) evidence. The vineyards of ancient Egypt, were quite different from the modern methods of wine making today. (10) viticulture ( or wine making), ceased to (11) an exclusively ceremonial purpose, the Egyptians began to experiment with simple structures for their vines to train on, (12) found a way to train their vines so they were easy low (13) bushes, and found ways for the soil to (14) more moisture for the vines. Egyptian wine making experiments included the use of different wine presses, adding heat to the must ( the grape juice ready for fermentation) (15) make the wine sweet, and differences in vat types and materials. The (16) finished product of wine, was poured through a cloth filter, and then into earthenware jars, (17) they would be sealed with natural tar and left to (18) . The Egyptians kept accurate records of their vintages, and (19) of their wines, each jar of wine was clearly (20) with it’s own vintage, and quality.

20()

A.marked

B.written

C.labeled

D.recorded

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