送交者: skipper3 于 2005-9-04, 00:15:36:
回答: No matter how good the quality of 专家论证 is, the risk 由 skipper3 于 2005-9-03, 23:56:31:
operation and evacuation procedure, or miners are not properly trained to follow the procedure, or rescue effort is not good enough, or simply management incompetence.