[单选题]
钢筋的塑性指标通常用( )表示。
<span style= font-family: 'Microsoft YaHei'; font-size: 13.333333969116211px;>屈服强度<|span>
<span style= font-family: 'Microsoft YaHei'; font-size: 13.333333969116211px;>抗压强度<|span>
<span style= font-family: 'Microsoft YaHei'; font-size: 13.333333969116211px;>伸长率<|span>
<span style= font-family: 'Microsoft YaHei'; font-size: 13.333333969116211px;>抗拉强度<|span>