建立并使用（），是减小危机冲击、迅速控制损失的有效方法。
A. 危机管理计划
B. 危机应对小组
C. 危机预警系统
D. 危机传播方案
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One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）
A. high TBN value
B. low oil floc point
C. low oil demulsibility
D. low oil neutralization number
比较注重返本、领取和具有医疗保障、收费低廉等保险产品的消费人群是（）
A. 中低收入阶层
B. 高收入阶层
C. 富裕阶层
D. 富有阶层
A 200-meter vessel restricted in her ability to maneuver，at anchor，will sound a fog signal of（）.
A. a 5 second ringing of a bell forward and a 5 second sounding of a gong aft at intervals of 1 minute
B. one prolonged followed by two short blasts every 2 minutes
C. one prolonged followed by three short blasts every minute
D. one prolonged followed by three short blasts every 2 minute
推钢式板坯加热炉的进出料型式一般为端进端出式。
A. 正确
B. 错误
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