单项选择题
A.a cable crossing B.a sunken barge C.a submerged discharge pipe D.the end of a wharf
As you approach Giles Bend Cutoff Light (mile 367.7 LDB...
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?（）
A.Green diamond B.Green triangle C.Red diamond D.Red square
As the temperature of the air reaches the dew point，（）....
单项选择题As the temperature of the air reaches the dew point，（）.
A.rain must develop B.fog may form C.it begins to snow D.water freezes
As the temperature of an air mass decreases，the（）.A.abs...
单项选择题As the temperature of an air mass decreases，the（）.
A.absolute humidity decreases B.relative humidity increases C.specific humidity decreases D.dew point rises
