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【单选题】
关于苯二氮革类药物的鉴别反应的现象,以下说法不正确的是( )A.
加硫酸后呈现不同颜色的荧光,且在稀硫酸中荧光的颜色略有不同
B.
可在氨水溶液中与碘化钾反应,形成沉淀
C.
1位氮原子未被取代的苯二氮卓类药物水解后可以呈芳伯氨基反应
D.
含有共轭体系,具有紫外特征光谱
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【单选题】蛋白质的三级结构是指
A.
蛋白质主链分子的空间构象
B.
蛋白质所有原子的空间排布
C.
多个亚基所构成的空间构象
D.
蛋白质分子中氨基酸的排列顺序
E.
以上都不对
【简答题】A.Because they want to retum to the job market． B.Because they want to leam something new． C.Because they want to make up for the education they missed． D.Because they want to prove themselves to be u...
【单选题】What do the airline companies want to do?
A.
They want to increase profits.
B.
They want to benefit the passengers.
C.
They want to sell cheap seats.
D.
They want to beat their competitors.
【单选题】蛋白质的三级结构是指
A.
蛋白质分子中所有原子的空间排布
B.
蛋白质分子中主链骨架原子的空间排布
C.
蛋白质分子中侧链原子的空间排布
D.
蛋白质分子中所有肽链的空间排布
【单选题】What do they want to do?
A.
They want to study.
B.
They want to read.
C.
They want to play game.
【简答题】A．They want to be great soldiers. B．They want to be savages. C．They want to win then they can be right. D．They want to be civilizations.
【单选题】Where do the mother and her son want to go?
A.
They want to go to London.
B.
They want to go to a concert.
C.
They want to go to Oxford.
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