单项选择题
A.Overhead power lines B.Louisiana-Mississippi ferry crossings C.Two railroad trestles D.Two submerged oil pipelines
The broken magenta line which runs parallel to the shor...
单项选择题The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
A.fish trap area B.pipeline C.demarcation line D.cable area
The best estimate of the wind direction at sea level ca...
单项选择题The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
A.cloud movement B.vessel heading C.waves D.swells
Steam smoke will occur when（）.A.extremely cold air from...
单项选择题Steam smoke will occur when（）.
A.extremely cold air from shore passes over warmer water B.warm dry air from shore passes over cooler water C.cold ocean water evaporates into warm air D.cool rain passes through a warm air mass
