单项选择题
As you approach mile 427.6 AHP，you see on the right side a white buoy with orange bands and diamond. This buoy marks（）.
A.a cable crossing B.a sunken barge C.a submerged discharge pipe D.the end of a wharf
单项选择题 As you approach Giles Bend Cutoff Light (mile 367.7 LDB)，what type of daymark would you see on the light structure?（）
单项选择题 As the temperature of the air reaches the dew point，（）.
单项选择题 As the temperature of an air mass decreases，the（）.
