N0对循环呼吸系统的影响,正确的是()
A.直接心肌抑制
B.对心率、血压、心排血量、血管阻力无影响
C.刺激呼吸道
D.常引起呼吸抑制
E.不增强其他吸入麻醉药的呼吸抑制
参考答案:B
Our school forbids ________, that is to say, we are not allowed ________ at school.[ ]
A. to smoke; to smoke
B. smoking; smoking
C. to smoke; smoking
D. smoking; to smoke
患者,男,66岁,因患急性广泛前壁心肌梗死合并急性左心衰竭急诊住院治疗,下列各种药物不宜应用的是
A.β受体阻滞药
B.硝酸甘油
C.硝普钠
D.吗啡
E.呋塞米