【单选题】以下溶剂可以用于青霉素萃取法分离纯化的有( )
【单选题】Little __ what others think.
【多选题】古人云:“立志而圣则圣矣,立志而贤则贤矣。”理想信念影响着一个人的精神面貌和行为举止。理想信念对人生的重要意义主要体现在( )
【单选题】A. He is optimistic about it. B. He is curious about it. C. He is sure about it. D. He is pessimistic about it.
A.
He is optimistic about it.
B.
He is curious about it.
D.
He is pessimistic about it.
【单选题】★1126.早期连锁企业的连锁方式是( )。