弹性压力计中常用的弹性元件有（    ）。

A、<span style="font-size:16px;font-family:宋体">弹性膜片&nbsp;&nbsp;</span>

B、<span style="font-size:16px;font-family:宋体">弹簧管&nbsp;&nbsp;</span>

C、<span style="font-size:16px;font-family:宋体">波纹管&nbsp;&nbsp;</span>

D、<span style="font-size:16px;font-family:宋体">节流件&nbsp;&nbsp;</span>

E、<span style="font-size:16px;font-family:宋体">孔板</span>