工作现场需做到（）。
A.无积煤
B.无积水
C.无积尘
D.无杂物
参考答案：A, B, C, D
32. This disaster ______ that people had no knowledge of first aid and they hadn’t known how to protect them-selves in face of danger.
A．led to
B．contributed to
C．resulted in
D．lay in
服务人员向顾客提供服务、使顾客满意的过程称为( )。
A．交互营销 B．内部营销C．外部营销 D．全面营销
