过滤机理取决于悬浮颗粒与滤料颗粒之间的()作用。
A.机械筛滤
B.分子运动
C.吸引力
D.黏附
参考答案:D
It has been proved________violence on television has a bad effect on the development of children.[ ]
A.whether
B.because
C.when
D.that
下述有关全麻药作用的描述哪项是正确的()
A.抑制外周感受器产生传入冲动
B.抑制神经纤维的兴奋传导
C.在接近中枢神经元部位抑制轴突的传导
D.抑制突触间的传递
E.与中枢GABA受体无关