心室肌有效不应期的长短主要取决于 :
A.动作电位0 期去极的速度
B.动作电位1 期的长短
C.动作电位2 期的长短
D.动作电位3 期的长短
E.阈电位水平的高低
参考答案:C
Though he doesn't achieve his goals, he is not a failure.___, he is remembered as a true hero. [ ]
A. In particular
B. On the contrary
C. Generally speaking
D. To be honest
家に( )次第、電話してください。
A.帰って
B.帰った
C.帰り
D.帰る