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单选题
Which statement concerning current is TRUE（）.
A
Current can be determined by measuring the direction and distance between simultaneous EP and DR positions
B
The drift of the current should be averaged out on a one hour basis
C
After the current is determined，it should not be used for further plotting because it is an unknown variable
D
The distance between a simultaneous DR position and fix is equal to the drift of the current
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更多 “单选题Which statement concerning current is TRUE（）.A Current can be determined by measuring the direction and distance between simultaneous EP and DR positionsB The drift of the current should be averaged out on a one hour basisC After the current is determined，it should not be used for further plotting because it is an unknown variableD The distance between a simultaneous DR position and fix is equal to the drift of the current” 相关考题
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