单项选择题
A.接通和截断介质B.调节介质的流量C.调节介质的温度D.调节管道压力
A.5%B.7.5%C.10%
A.C301B.C302C.C303
A.50℃B.38℃C.60℃
A.90%B.94%C.98%
A.-1B.-5C.-10
A.1B.0.9C.10
A.435℃B.470℃C.600℃
A.430℃B.470℃C.600℃
A.4.5%B.7.5%C.3.5%
A.1.5B.2C.3
A.-2kpaB.-8kpaC.-10kpa
A.90℃B.100℃C.130℃
A.420B.470C.600
A.90%B.99.7%C.98%
A.泵憋压B.泵电机跳闸C.泵抽空D.泵反转
A.2B.3C.4
A.3.5B.6.07C.5.5