【多选题】、旅游活动进入中期阶段的导游工作最为艰巨,也最容易出现差错,因此导游人员的精力必须高度集中,在工作中注意以下问题( )
D.
导游要多向游客讲解注意事项,替游客保管好证件和物品
【单选题】测量电压UAB,万用表显示为-24V,说明()
【单选题】已知 Uab=-3V ,则电压的参考方向为( )
【多选题】Which description is correct? ( )
A.
Position page 2 is a place where the crew can go to look at the IRS position versus the computed FMC position.
B.
The bearing/distance from the FMC position can also be shown on position page 2.
C.
The GPS position is usually used to set IRS position alignment.
D.
On Position page 2, the "IRU(3)" means the IRU position is coming from the average the positions from each IRU.
【判断题】跨境电商减少了对外贸易的中间环节,提升了进出口贸易的效率,为小微企业提供了机会。