压力油罐的油、气比为多少?为什么?
(1)油气比为1∶2 (2)油过多,将使得罐内压力不稳定,造成油泵起动频繁。 (3)油少气过多,则在大量用油时易使调速器进气。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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