单项选择题
Would you please（）on the radar?
A.Switch B.To switch C.Switched D.Will switch
单项选择题 Would you mind（）your DF?
单项选择题 With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
单项选择题 With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
