A.進(jìn)站氣量-出站氣量B.上游供氣量-門站出站氣量C.上游供氣量-門站進(jìn)站氣量D.進(jìn)站氣量-放散氣量-自用氣量-出站氣量
A.定期標(biāo)定、校準(zhǔn)流量計(jì)B.選擇合適量程的流量計(jì)C.每月注油D.每天注油
A.與上游交接的計(jì)量誤差B.對(duì)終端用戶的計(jì)量誤差C.與上游交接的計(jì)量誤差和對(duì)終端用戶的計(jì)量誤差D.計(jì)量?jī)x表參數(shù)設(shè)定錯(cuò)誤或故障