服务质量统计分析的内容没有（）。
A.服务承诺的兑现情况
B.不满意程度
C.存在问题及分析
D.客户新的服务需求分析
参考答案：B
液体状态的液化石油气一旦泄漏，会发生怎样的情况？
A.会立刻蒸发成气体
B.会保持液体状态和向下流走
C.会发生一氧化碳毒气
Areas which cannot be scanned by the radar of the vessel because they are shielded by parts of its superstructure, masts,etc means（）.
A.blind sectors
B.sheltered area
C.unseen area
D.unscan ble area
