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【判断题】
凯氏定氮法测定N元素含量时,样品与浓硫酸,催化剂一同加热消化,其中N最终转化为氮气。( )A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】( )
A.
The job requires beginners to work hard.
B.
He enjoys working in the advertising company.
C.
His well-paid job requires a lot of hard work.
D.
He feels underpaid for he often works overtime.
【单选题】7
A.
He enjoys working in the advertising company.
B.
The job requires beginners to work hard.
C.
His well-paid job requires a lot of hard work.
D.
He feels underpaid for he often works overtime.
【简答题】A. She is affected by advertising. B. She likes shopping online. C. She enjoys playing s. D. She decides to save more money.
【简答题】A. The job requires beginners to work hard. B. He enjoys working in the advertising company C. His well paid job requires a lot of hard work. D. He feels underpaid for he often works overtimes.
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