船用电动往复泵额定排出压力为pdh,则安全阀的开启压力和排出阀关闭时安全阀的排放压力应为()。A、1.5pdh和≯pdh+0.25MPaB、(1.1~1.15)pdh和≯pdh+0.25MPaC、(1.1~1.15)pdh和1.5pdhD、pdh和≯pdh+0.25MPa
船用电动往复泵额定排出压力为pdh,则安全阀的开启压力和排出阀关闭时安全阀的排放压力应为()。
- A、1.5pdh和≯pdh+0.25MPa
- B、(1.1~1.15)pdh和≯pdh+0.25MPa
- C、(1.1~1.15)pdh和1.5pdh
- D、pdh和≯pdh+0.25MPa
相关考题:
船用电动往复泵额定排出压力为Pdh,则安全阀的开启压力和排出阀关闭时安全阀的排放压力应为()A、1.5Pdh和≯Pdh+0.25MPaB、(1.1~1.15)Pdh和Pdh≯+0.25MPaC、(1.1~1.15)Pdh和1.5PdhD、Pdh和≯Pdh+0.25MPa
单选题船用电动往复泵额定排出压力为pdh,则安全阀的开启压力和排出阀关闭时安全阀的排放压力应为()。A1.5pdh和≯pdh+0.25MPaB(1.1~1.15)pdh和≯pdh+0.25MPaC(1.1~1.15)pdh和1.5pdhDpdh和≯pdh+0.25MPa
单选题关小电动往复泵排出阀不会导致()。A排出压力升高B电机过载C流量明显减少D安全阀开启