离心泵铭牌上标明的扬程可理解为 _______ 。

A、<span style="font-size:14px;font-family:汉仪书宋二简">该泵在规定转速下可以将</span><span style="font-size:14px;font-family: &#39;Times New Roman&#39;,&#39;serif&#39;">20</span><span style="font-size:14px;font-family:宋体">℃</span><span style="font-size:14px;font-family:汉仪书宋二简">的水升扬的高度</span>

B、<span style="font-size:14px;font-family:汉仪书宋二简">该泵在规定转速及最高效率下可以将</span><span style="font-size:14px;font-family: &#39;Times New Roman&#39;,&#39;serif&#39;">20</span><span style="font-size:14px;font-family:宋体">℃</span><span style="font-size:14px;font-family:汉仪书宋二简">的水升扬的高度</span>

C、<span style="font-size:14px;font-family:汉仪书宋二简">该泵在规定转速及最高效率下对</span><span style="font-size:14px;font-family: &#39;Times New Roman&#39;,&#39;serif&#39;">20</span><span style="font-size:14px;font-family:宋体">℃</span><span style="font-size:14px;font-family:汉仪书宋二简">的水提供的压头</span>

D、<span style="font-size:14px;font-family:汉仪书宋二简">该泵在规定转速下对</span><span style="font-size:14px;font-family: &#39;Times New Roman&#39;,&#39;serif&#39;">20</span><span style="font-size:14px;font-family:宋体">℃</span><span style="font-size:14px;font-family:汉仪书宋二简">的水提供的压头</span>