A、<span style="font-size:16px;font-family:宋体">直接质量流量计 </span>
B、<span style="font-size:16px;font-family:宋体">间接质量流量计 </span>
C、<span style="font-size:16px;font-family:宋体">涡轮质量流量计 </span>
D、<span style="font-size:16px;font-family:宋体">电磁质量流量计 </span>
E、<span style="font-size:16px;font-family:宋体">电容流量计</span>