A. pure metal B. bauxite C. gold D. liquid 相关知识点: 试题来源: 解析 B解析:最后一段第一句…it is fortunate that bauxite(铝土矿),which is one of its chief sources,is also one of the earth"s most plentiful substances.作为铝的主要来源,铝土矿是地球上最丰富的物质之一,可知铝的形式主...
A.pure metalB.bauxiteC.goldD.liquid相关知识点: 试题来源: 解析 B 本题为客观细节题。从最后一段“it is fortunate that bauxite(铝土矿),which is one of its chief sources,is also one of the earth's most plentiful substances”可知铝主要以铝土矿的形式存在。
6.—It is impossible to finish the difficult task in such a short time by myself ___ both of us work together. —No problem. Let’s start! A.if B.but C.because D.unless 7.—Zibo has unexpectedly got popular since late Fe...
For starters, unlike most metal ores, bauxite needs no complex processing. This is because most mined bauxite is already of a good grade, or it may be improved by simply removing the clay. Clay can be removed by washing, hand picking, sorting, wet screening, cycloning, or any combination...
18 BIS IS 2000: PART 3-1985 1985-01-01 English Methods of chemical analysis of bauxite Part 3 Determination of alumina19 BIS IS 11172: PART 2-1985 1985-01-01 English Recommendations for Tool Shanks for Numerically Controlled Machine Tools (tool stationary type) - Part 2 : Prismatic Shank ...
It is widespread metal on planet Earth and originates from or derived from its ore called bauxite. It has different properties such as being durable, lightweight and is corrosion free, or resistant to corrosion, and a good conductor of electricity. ...
To produce the porcelain, calcined bauxite is used instead of alumina. The simultaneous addition of clay and kaolin, in each case containing more than 5% by weight of foreign metal oxide inclusions, results in a porcelain which, compared to an alumina porcelain of the same mechanical strength, ...
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A.pure metal B.bauxite C.gold D.pquid 该题目是单项选择题,请记得只要选择1个答案! 正确答案 点击免费查看答案 试题上传试题纠错 题目解答分析 本题为客观细节题。从最后一段“it is fortunate that bauxite(铝土矿),which is on... 更多答案...请查看上面的正确答案 TAGS ...