含有两个手性中心的抗血吸虫病药（）.
A．本芴醇
B．枸橼酸乙胺嗪
C．吡喹酮
D．阿苯达唑
E．奎宁
参考答案：C
NSW型手制动机有哪些主要用途和结构特点？
Heroes are made by the time they live in and _____ in time of danger or difficulty is one of the fine
qualities that can be found _____ them. [ ]
A. brave; in
B. being brave; in
D. bravery; of
D. to be brave; of
