下列药物中属于降低心脏后负荷的是______ A．硝酸甘油 B．螺内酯 C．卡托普
题型：单项选择题
问题：
下列药物中属于降低心脏后负荷的是______
A．硝酸甘油
B．螺内酯
C．卡托普利
D．硝酸异山梨酯
题型：单项选择题
The figure above represents the floor plan of an art gallery that has a lobby and 18 rooms. If Lisa goes from the lobby into room A at the same time that Paul goes from the 10bby into room R and each goes through all of the rooms in succession, entering by one door and exiting by the other, which room will they be in at the same time ？（）
(1)Lisa spends 2x minutes in each room and Paul spends 3x minutes in each room.
(2)Lisa spends 10 minutes less time in each room than Paul does.
A．条件(1)充分，但条件(2)不充分．
B．条件(2)充分，但条件(1)不充分．
C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．
D．条件(1)充分，条件(2)也充分．
E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．