哪项不是决定肌力大小的因素
A．收缩速度B．肌肉初长度C．收缩的持续时间D．肌肉收缩的类型E．肌肉的横截面积
参考答案：C
He felt curious that he asked many questions about it.
A．such , such
B．so , so
C．such , so
D．so , such
五肽交联桥（革兰阳性菌特有）
