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【单选题】
分析测定中出现的下列情况,属于偶然误差的是:A.
滴定时所加试剂中含有微量的被测物质
B.
滴定管的最后一位读数偏低
C.
所用试剂含干扰离子
D.
室温升高
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举一反三
【单选题】Why did Steven start charging people to make calls with mobile phone?
A.
He had an best mobile phone.
B.
He couldn’t find a job.
C.
He wanted to make more money.
【单选题】I prefer tea to coffee. I find drinking tea is , or better than, drinking coffee.
A.
as good as
B.
as good
C.
good
D.
good as
【单选题】--- Steven, where did you come across the famous novelist from England? --- Believe it or not, it was in the supermarket ________ we went shopping last Sunday.
A.
which
B.
that
C.
there
D.
where
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