钙通道阻断药机制()
A.改变细胞周围环境的理化性质
B.参与细胞物质代谢过程
C.促进或抑制酶反应
D.影响细胞膜通透性
E.参与递质释放
参考答案:D
下列镇痛药及其作用与激动脑内阿片受体无关的是()
A.曲马朵
B.罗通定
C.美沙酮
D.哌替啶
E.芬太尼
Agriculture _____ about 14 percent of global greenhouse gas emissions, and transporting the food around adds to the environmental cost.
A.cares for
B.applies for
C.accounts for
D.answers for