单项选择题
下列化合物的顺反构型可标记为： A、顺 B、 反 C、 (Z) D、(E)
单项选择题下列化合物的顺反构型可标记为： A、顺 B、 反 C、 (Z) D、(E)
How to answer the question of “What is the difference b...
单项选择题How to answer the question of “What is the difference between a soldier and a young girl?” with the use of pun? A、They are different in gender. B、A soldier is stronger. C、A girl is more beautiful. D、One powders the face; the other faces the powder.
患儿男,5个月,诊断为维生素D缺乏性佝偻病初期,该患儿的主要症状为 ...
单项选择题患儿男,5个月,诊断为维生素D缺乏性佝偻病初期,该患儿的主要症状为 A. 肌肉松弛 B. 偻骨软化 C. 肋骨串珠 D. 鸡胸 E. 手镯症
