药物作用与阿片受体无关的是
A．哌替啶
B．纳洛酮
C．可待因
D．二醋吗啡(海洛因)
E．罗通定
参考答案：E
Elizabeth _______ a good plan of increasing sales at the meeting.
A．put up
B．put on
C．put forward
D．put down
继发反应
