汽泵跳闸的条件?
除氧器水位低于400mm;汽泵再循环门关闭且流量小于130t/h时延时30s;汽泵前置泵电机跳闸;汽泵径向轴承温度高90度;汽泵推力轴承高90度。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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