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【单选题】
某药物的水解为一级反应,其半衰期为50d,则其浓度达 时所需的时间为A.
12.5d
B.
25d
C.
100d
D.
150d
E.
200d
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【简答题】Around twenty years ago, I was living in New York. 1 I had a lot of experience and a ’s degree, I could not find 2 work. I was driving a school bus to make ends meet ( 收支相抵 ) and 3 with a friend...
【单选题】My color television has given me nothing but a headache. I was able to buy it a little over a year ago because I had my relatives give me money for my birthday instead of a lot of clothes that wouldn’...
A.
ended all their programs
B.
provided fewer channels
C.
changed to commercials
D.
showed all-night movies
【简答题】My color television has given me nothing but a headache.I was able to buy it a little over a year ago because I had my relatives give me money for my birthday instead of a lot of clothes that wouldn’t...
【简答题】A My color television has given me nothing but a headache. I was able to buy it a little over a year ago because I had my relatives give me money for my birthday instead of a lot of clothes that would...
【简答题】题目写听材料，回答问题吧。 1.I had a (an) _________ day off. A. interesting B. relaxing C. boring 2. I had to study for _________ at home. A. the math competition B. the math test C. the English test 3. The gift...
【单选题】（）条码是一种固定长度(尺寸)的矩阵式二维条码，它有紧密相连的平行六边形模块和位于符号中央位置的定位图形组成。它的符号共有 7 种模式(包括两种作废模式)。
A.
Maxicode
B.
Data Matrix
【单选题】安钠咖注射液处方如下 苯甲酸钠 1300g 咖啡因 1301g EDTA-2Na 2g 注射用水加至 10000ml其中，咖啡因与苯甲酸钠形成苯甲酸钠咖啡因，溶解度由1：50增大到1：1.2，其中苯甲酸钠的作用是（ ）。
A.
止痛剂
B.
抑菌剂
C.
助溶剂
D.
增溶剂
【单选题】听力原文：M: What kind of father am I? My daughter had had a fever for a couple of day, but I didn't even know about it. W: Don't blame yourself too much. You've been too much involved in the company's wor...
A.
He is a careless father.
B.
He is very busy with work.
C.
He is an irresponsible father.
D.
He is indifferent to his family.
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