第23题:[单选题] What is important to check when transferring a position from GPS to a chart? A. Reading the position correctly B. Plotting the position correctly C. Make sure that the chart and the GPS use same datum D. Make sure the map is updated 参考答案:C 【参考译文】当GPS位置转移到海图上时,重点核查什么?确保GPS和海图使用相同的基准。 【解 析】datum基准