药物的量效关系曲线不能表明()
A.安全范围
B.个体差异
C.效价强度
D.最大效应
E.药理效应的强弱
参考答案:A
下列物理公式属于定义式的是( )
A.
B.
C.
D.
the aftemoon he often plays computer games. But yesterday afternoon he did some
washing.[ ]
A. In; in
B. /; in
C. In; /
D. /; /