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【单选题】Chocolate to Live For! A study published in the Journal of the American Medical Association in 2003 reported that dark chocolate may lower your blood pressure. Researchers at the University of Cologne...
A.
it increases the production of nitric oxide.
B.
it increases blood flow to the penis and enhances eruptions.
C.
it lowers both systolic and diastolic blood pressures.
D.
it helps to repair damage to blood vessels in the body.
【单选题】A．盐酸麻黄碱B．重洒石酸去甲肾上腺素C．盐酸克仑特罗D．盐酸甲氧明E．盐酸多巴胺 具有侧链末取代的苯乙胺结构
A.
A．
B.
B．
C.
C．
D.
D．
E.
E．
【单选题】苯乙胺拟肾上腺素药，侧链氨基上被体积较大的异丙基或叔丁基取代时
A.
对α 1 受体激动作用增大
B.
对α 2 受体激动作用增大
C.
对β受体激动作用减小
D.
对β受体激动作用增大
E.
对α和β受体激动作用均减小
【单选题】Chocolate to Live For! A study published in the Journal of the American Medical Association in 2003 reported that dark chocolate may lower your blood pressure. Researchers at the University of Cologne...
A.
It is a powerful substance to power the heart.
B.
It is a substance to cause blood vessels to relax and contract.
C.
It is a substance flowing from the heart to all over the body.
D.
It is the substance that controls blood pressur
【单选题】苯乙胺属于拟肾上腺素药，侧链氨基上被体积较大的基团取代时
A.
对α受体激动作用增大，对β受体激动作用减小
B.
对α受体激动作用增大，对β受体激动作用增大
C.
对α受体激动作用减小，对β受体激动作用减小
D.
对α受体激动作用减小，对β受体激动作用增大
E.
对α和β受体激动作用均增大
相关题目：
【单选题】Chocolate to Live For! A study published in the Journal of the American Medical Association in 2003 reported that dark chocolate may lower your blood pressure. Researchers at the University of Cologne...
A.
it increases the production of nitric oxide.
B.
it increases blood flow to the penis and enhances eruptions.
C.
it lowers both systolic and diastolic blood pressures.
D.
it helps to repair damage to blood vessels in the body.
【单选题】A．盐酸麻黄碱B．重洒石酸去甲肾上腺素C．盐酸克仑特罗D．盐酸甲氧明E．盐酸多巴胺 具有侧链末取代的苯乙胺结构
A.
A．
B.
B．
C.
C．
D.
D．
E.
E．
【单选题】苯乙胺拟肾上腺素药，侧链氨基上被体积较大的异丙基或叔丁基取代时
A.
对α 1 受体激动作用增大
B.
对α 2 受体激动作用增大
C.
对β受体激动作用减小
D.
对β受体激动作用增大
E.
对α和β受体激动作用均减小
【单选题】Chocolate to Live For! A study published in the Journal of the American Medical Association in 2003 reported that dark chocolate may lower your blood pressure. Researchers at the University of Cologne...
A.
It is a powerful substance to power the heart.
B.
It is a substance to cause blood vessels to relax and contract.
C.
It is a substance flowing from the heart to all over the body.
D.
It is the substance that controls blood pressur
【单选题】苯乙胺属于拟肾上腺素药，侧链氨基上被体积较大的基团取代时
A.
对α受体激动作用增大，对β受体激动作用减小
B.
对α受体激动作用增大，对β受体激动作用增大
C.
对α受体激动作用减小，对β受体激动作用减小
D.
对α受体激动作用减小，对β受体激动作用增大
E.
对α和β受体激动作用均增大
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