综采工作面使用的设备主要有:滚筒式采煤机或刨煤机、可弯曲刮板输送机、[]、乳化液泵站、移动变电站、转载机、可伸缩胶带输送机等。()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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