【单选题】By doing what the receiver of a complaining call will demonstrate responsibility to the caller?
A.
Trying to calm down the angry or reassure the anxious caller.
B.
Expressing deep regrets for what has happened to the caller.
C.
Keeping patient and controlling emotion throughout the conversation.
D.
Giving the name of the organization that the phone connects.
【单选题】The author mentioned the disaster of Hurricane Katrina because he wanted to demonstrate the harmful effects of unlimited emission of carbon dioxide.
【单选题】下列关于防水混凝土结构的说法中,错误的是( )。
【单选题】地下结构防水混凝土结构厚度不应少于( )mm。
【单选题】防水混凝土结构底板的混凝土垫层,其强度等级应不小于C15,厚度不应小于100mm,在软土层中应不小于多少?( )