【单选题】下面哪种方法沉淀出来的蛋白质具有生物学活性?
【单选题】下面哪种方法沉淀出来的蛋白质具有生物学活性?
【单选题】下面哪种方法沉淀出来的蛋白质具有生物活性( )
【简答题】下面哪种方法沉淀出来的蛋白质具有生物学活性?A. 重金属盐 B.盐析 C.苦味酸 B. 常温下有机溶剂 E.强酸强碱
【单选题】下面哪种方法沉淀出来的蛋白质具有生物学活性?
【单选题】The author uses the word 'euphemism' as an example to maintain that______.
A.
you can't understand the exact meaning of an unfamiliar word according to its surrounding words
B.
you can always guess the meanings of difficult words because of the context
C.
you express yourself in an indirect and less harsh way sometimes
D.
you can sometimes find clues to the meanings of unfamiliar words in their context
【简答题】Which of the following is not true? [A] Some people know little about the topic under discussion. [B] Some people do not know what the host is talking about [C] Some people do not know what the show i...
【单选题】The designer himself is not sure whether this software is appropriate ______ children under 12 years ol
【判断题】学习动机是影响学习效果的智力因素,是促使个体进行学习的内部动力。
【单选题】下面哪种方法沉淀出来的蛋白质具有生物学活性