神经细胞动作电位的幅值取决于()
A.刺激强度
B.刺激持续时间
C.K+和Na+的平衡电位
D.阈电位水平
E.兴奋性高低
参考答案:C
—I'll go on business to New York for a week. Can you my dog while I am away?
—No problem. [ ]
A. take care of
B. look forward to
C. take part in
D. catch up with
子宫镜检查时间应为()
A.月经中期
B.月经前5天
C.月经干净后3~7天
D.月经干净后10天
E.与月经无关