Which of the following things is not a digital product?
A. computer
B. mobile phone
C. handbag
D. digital camera
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取药品0.20g，精密称定，用25ml甲溶解，后进行水分测定，消耗费休氏试液15.03ml，空白试验消耗费休氏试液1.53ml，费休氏试液的F=3.98mg/ml。求药品中的水分含量（）
A. 1.5%
B. 26.9%
C. 13%
D. 0.06%
How often do you use WeChat ?
A. three days
B. every day
C. a week
D. a month
利用药物溶解行为的差异进行杂质检查的方法属于（）
A. 物理性状检查法
B. 化学方法
C. 光谱分析法
D. 色谱分析法
_________ means a computer that is portable and suitable for use while traveling.
A. laptop
B. converter
C. hard drive
D. digital TV
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