单项选择题
A.horizontal B.vertical C.diagonal D.vertical or diagonal
For full information regarding the current circulation ...
单项选择题For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.
A.watch B.look for C.see D.regard
During daylight savings time the meridian used for dete...
单项选择题During daylight savings time the meridian used for determining the time is located farther （）.
A.west in west longitude and east in east longitude B.east in west longitude and west in east longitude C.west D.east
During a period of whiteout，you should expect which of ...
单项选择题During a period of whiteout，you should expect which of the following（）.
A.Snowfall or blowing snow B.Lack of ability to estimate distance C.Harsh contrast between sun-illuminated snow cover and the background D.Hazy horizons with extensive mirage effects
