干粉灭火器的干粉不导电，可用于扑灭带电设备的火灾。( )
参考答案：对
设备管理信息系统采用岗位号进行操作授权管理，岗位代码为6位，岗位代码与用户名（工号）是（）关系。
A、一对多
B、一对一
C、多对一
Culture shock is a feeling____ most travellers experience in a foreign country____ they find the culture is quite different from that of their own.
A．that; which
B．which; that
C．which; where
D．when; where
