你的朋友想去参观中国闽台缘博物馆,选择最适合的地图是 [ ]
A.泉州交通旅游地图
B.福建省地形图
C.中国政区图
D.世界政区图
答案:A
人体缺少维生素C会患 ( )
A.夜盲症
B.坏血病
C.贫血症
D.佝偻病
What should you do if you have transmitted a distress call a number of times on channel 16 and have received no reply?()
A.Repeat the message using any other channel on which you might attract attention
B.Key the microphone several times before transmitting again
C.Turn up the volume on the receiver before transmitting again
D.Report the problem to the head electrician