The TWEB Route Forecasts and Synopses are issued by the Weather Service Forecast Offices (WSFOs) four times per day according to time zone.The TWEB forecast is valid for a|an
A.8-hour period.
B.12-hour period.
C.15-hour period.
正确答案是B
The TWEB Route Forecasts and Synopses are issued by the Weather Service Forecast Offices (WSFOs) four times per day according to time zone.The TWEB forecast is valid for a|an
A.8-hour period.
B.12-hour period.
C.15-hour period.
正确答案是B