轴封减温水何时投用?
减温水在低压轴封母管温度超过177℃时投用。投用减温水时,由于减温水和轴封母管压力差别很大,应注意监视和控制轴封母管温度,控制减温水量,确保轴封汽的过热度,防止轴封带水。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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