问题：
[单选题]When using the radar for navigating（）.
A、the best fix is obtained by using a tangent bearing and a range
B、and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings
C、and using ranges，the most rapidly changing range should be measured last
D、and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart
参考答案：
C
相关内容
- ● When uing the radar for navigating（）.
- ● The Conol navigation ytem，ued in Ruian and Northern European water，can be ued（）.
- ● Cla I and II private aid to navigation in or along navigable water of the United State are lited in the（）.
- ● Mater are（）olely reponible for all damage or accident of whatever kind reulting from the navigating or handling of their veel by day or by night.
- ● Sidereal time i ued by navigator when（）.
- ● A feeler or thermal bulb i ued for the expanion valve to （）.
- ● The radio wave ued for radar are very hort，only（）long.
- ● The（）enable water to be blow down or emptied from the boilerIt may be ued when partially or completely emptying the boiler.
- ● The guard, fencing or hielding for moving part or machinery can be removed for repair only when the machinery it belong to（）
- ● 目前ARPA对雷达图像的量化处理上，对量化单元可（）。
- ● The four tandard light color ued for lighted aid to navigation are red，green，white，and （）.
- ● 与ARPA雷达相比，AIS的优越性是（）。
