题目内容
电机车进入信号灯显示区内，应立即关闭信号。
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移频器有什么实用价值？移频与移相有什么不同？
A customer has an existing high availability SAN environment with CLARiiON, which has been stable for 16 months. They have recently experienced several outages with their current storage systems. They need to purchase additional storage and have asked about tier 1 storage. They are concerned with connecting their existing storage and servers without trouble. Which resource should be consulted while developing the solution options?（）
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矿井大型设备维修电工.高空或井筒作业时必须佩带哪些安全装置？
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