【单选题】How do digital retailers enhance marketing efficiency?
A.
Through cloud computing.
B.
Through TV advertisement.
C.
Through newspapers advertisement.
D.
Through social networks and online advertising.
【单选题】How do digital retialers drive innovation?
A.
By earning valuable patents.
B.
By retaining top technical talent.
C.
By attracting more loyal customers.
D.
By spending heavily on online advertising.
【简答题】A. 盐酸麻黄碱 B. 硫酸阿托品 C. 硫酸奎宁 D. 盐酸吗啡 E. 咖啡因 托烷类生物碱 _____ 。 异喹啉类生物碱 _____ 。 苯烃胺类生物碱 _____ 。 喹啉类生物碱 _____ 。 黄嘌呤类生物碱 _____ 。
【简答题】具有吩噻曝结构的药物是A.盐酸麻黄碱 B.盐酸异丙嗪 C.盐酸吗啡 D.硫酸阿托品 E.硫酸奎宁 属异喹啉类生物碱,分子中含酚羟基和叔胺基团的是A.盐酸麻黄碱 B.盐酸异丙嗪 C.盐酸吗啡 D.硫酸阿托品 E.硫酸奎宁 具有苯羟胺结构的药物是A.盐酸麻黄碱 B.盐酸异丙嗪 C.盐酸吗啡 D.硫酸阿托品 E.硫酸奎宁 为喹啉衍生物的药物是A.盐酸麻黄碱 B.盐酸异丙嗪 C.盐酸吗啡 D.硫酸阿托品 ...