![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
Navigation中将已知地图做成Topic来发布的软件包是()。
A.map_server
B.map_saver
C.robot_map
D.AMCL
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.map_server
B.map_saver
C.robot_map
D.AMCL
A.径向线、方位线和高度
B.径向线、方位线和经纬度
C.径向线、方位线和距离
Despite their varied designs, navigation computers used in cars ______.
A.are more or less the same price
B.provide directions in much the same way
C.work on more or less the same principles
D.receive instructions from the same satellites
采用干燥器干燥催化剂,已知干燥器操作压力79.98kPa(A),出口气体的温度为60℃,湿度为0.11kg水/kg干空气,工艺中将部分出口气体返回干燥器入口与新鲜空气混合,使进入干燥器的气体温度不超过90℃,相对湿度为12%。已知新鲜空气的流量为了1580kg/h,温度为20℃,湿度为0.02kg水/kg干空气,水在90℃时的饱和蒸汽压为70.09kPa(A),需要循环的空气量(kg干空气/h)是下述哪个数值?()提示:H——湿度,kg水蒸汽/kg干空气;φ——相对湿度;P——总压,kPa(A);PS——水的饱和蒸汽压,kPa(A)
A.2228
B.2154
C.2689
D.2485
Which of the following is NOT mentioned in the passage concerning the expedition?
A.Lack of navigation equipment.
B.Severe winter in Patagonia.
C.The death of Magellan.
D.Dangers from rocks and storms.