七氟烷(七氟醚)的特点是()
A.减少脑血流量,降低颅内压
B.抑制心肌传导系统
C.有明显扩张冠状动脉的作用
D.无呼吸抑制
E.增强心肌对外源性儿茶酚胺的敏感性
参考答案:C
—We are going to have a picnic next Sunday.
—_______________________
A.The same to you.
B.Help yourself.
C.Have a good time.
D.I don’t agree with you.
“感觉剥夺”实验说明感觉是人类一切心理活动的______。