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【单选题】
磺胺嘧啶钠注射液中含有亚硫酸氢钠A.
碘量法测定含量时先加入甲醛
B.
亚硝酸钠法测定含量时先加入盐酸
C.
色谱分析法
D.
容量滴定法
E.
用紫外法测定含量时，需选择合适波长进行测定
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反馈参考答案：
举一反三
【简答题】设x的值为15,n的值为2,则运算表达式”x%=(n+=3)”后,x的值是 。
【单选题】What does the author say about deep wells?
A.
They run without any need for repairs.
B.
They are entirely free from pollutants.
C.
They are the ultimate solution to droughts.
D.
They provide a steady supply of freshwater.
【简答题】say ___________
【简答题】They say Nick has debts.
【单选题】— How many pages have you covered of that book on financial crises? — I have given up, for it’s ______ me.
A.
ahead of
B.
above
C.
apart from
D.
on
【单选题】What does the woman say about John?
A.
He won’t wait for her.
B.
He won't come home today.
C.
He won’t be on time for dinner.
【简答题】硫铁矿焙烧制SO2炉气过程中，为了提高硫的烧出率和焙烧速率，采用的焙烧条件是（ ）、（ ）、（ ）。A. 高温，富氧空气，小颗粒矿石
【单选题】What does Herb Smith say about the Mission?
A.
It continues through the year.
B.
It is appreciated by the poor and homeless.
C.
It only runs on Christmas and Thanksgiving.
D.
It distributes Christmas gifts.
【简答题】But aides say they detect ______________ wistfulness in his voice.
【单选题】— How many pencils do you have? — ________________ [ ]
A.
No pencils for me.
B.
It's a pencil.
C.
I have four pencils.
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