入货和卸货都是自动操作装置。
当其中之一的阀门被激活，如果恰好迸发前工人操作不慎，那么防喷器就不会阻止油气流，当其失去与平台之间的连接时也不会切断其本应切断的油气流，即便稍后便启动了一个远程操作装置。
Nor did it shut off the flow when its connections to the rig were lost, as it should have. Nor when a remotely operated vehicle activated it later.
这个装置的操作非常简单。
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