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【单选题】
非那西丁含量测定:精密称取本品加稀盐酸回流小时后,放冷,用亚硝酸钠液滴定,用去每亚硝酸钠液相当于的。计算非那西丁的含量为A.
95.55%
B.
97.55%
C.
98.55%
D.
99.72%
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【简答题】I studied at this school a few years ago. I studied at this school a few years ago .
【单选题】(单选题)日前交通运输部制定了三年行动计划明确,到2020年( )里程达到3万公里,覆盖80%以上的城区常住人口100万以上的城市。
A.
地铁
B.
高速公路
C.
高速铁路
D.
货运专线
【单选题】How long did it take them to get divorced?
A.
A few years.
B.
A few months.
C.
A few days.
D.
Three days.
【单选题】38 Panic disorder is said to emend from
A.
a few months to a few years。
B.
a few months to a lifetime.
C.
a few days to a few months.
D.
a few minutes to a few days.
【单选题】Panic disorder is said to extend from
A.
a few months to a few years.
B.
a few months to a lifetime.
C.
a few days to a few months.
D.
a few minutes to a few days.
【单选题】The ideal of IBM as a company began to change______.
A.
a few years ago
B.
a few months ago
C.
since 1990
D.
after John Akers became the General Manager
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