A、<span style="font-family: 宋体;font-size: 15px">靠近前尺</span></p><p></p>
B、<span style="font-family: 宋体;font-size: 15px">.</span><span style="font-family: 宋体;font-size: 15px">两尺中间</span></p><p></p>
C、<span style="font-family: 宋体;font-size: 15px">靠近后尺</span>