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【单选题】
下列叙述中正确的是 [ ]A.
以非极性键结合起来的双原子分子一定是非极性分子
B.
以极性键结合起来的分子一定是极性分子
C.
非极性分子只存在原子单质分子里
D.
非极性分子中一定含有非极性共价键
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皮皮学刷刷变学霸
举一反三
【判断题】Early Modern English lacked uniformity in spelling, but Samuel Johnson's dictionary, published in 1755 in England, was influential in establishing a standard form of spelling.
A.
正确
B.
错误
【简答题】99，567，8，1089，1755，（ ）
【判断题】As a lexicographer, Samuel Johnson distinguished himself as the author of A Dictionary of the English Language (1755), a gigantic task which Johnson undertook with his friends and finished in over sev...
A.
正确
B.
错误
【判断题】Samuel Johnson was the editor of A Dictionary of the English Language (1747~1755), the first great English dictionary.
A.
正确
B.
错误
【简答题】皂化值是皂化1g油中全部脂肪酸所需KOH的（ ）数为皂化值
【单选题】In_____,Samuel started compiling a dictionary of the Engish language.
A.
1747
B.
1755
C.
1765.0
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