单选15．在下述检测液位的仪表中，受被测液体密度影响的是(    )。

A、<span style="font-size:16px;font-family:宋体">差压式液位计</span><span style="font-size:16px;font-family:&#39;Times New Roman&#39;,&#39;serif&#39;">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span>

B、<span style="font-size:16px;font-family:宋体">玻璃液位计</span>

C、<span style="font-size:16px;font-family:宋体">电容式液位计</span><span style="font-size:16px;font-family:&#39;Times New Roman&#39;,&#39;serif&#39;">&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span>

D、<span style="font-size:16px;font-family:宋体">超声式液位计</span><span style="font-size:16px;font-family:&#39;Times New Roman&#39;,&#39;serif&#39;">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span>