金钥匙服务理念的核心不包括（）
A.用心极致
B.先利己，后利人
C.满意加惊喜
D.想客人之所想，想客人之所未想
参考答案：B
ATP超速的“触发”点，一般设定在比限速高5km/h。
Line throwing apparatus aboard ship must contain（）.
A.two rockets，one of which shall be the buoyant type
B.three rockets，one of which shall be the buoyant type
C.four rockets，two of which shall be the buoyant type
D.five rockets，two of which shall be the buoyant type
