在去旅游景点的途中，导游员应( )。
A．核实、清点实到人数
B．重申当日的活动安排
C．提醒注意事项
D．核实餐饮落实情况
参考答案：B
_____, and the problem will be worked out.
A．If you have a bit more effort
B．Having a little effort
C．A bit more effort
D．There being a little effort
氮气精制除氧器启用时介质的流动方向是上进下出。
