【简答题】根据下图中点的分布(不考虑已知点和未知点的区别,不顾及通视等情况),设计出基于三台 GPS 接收机同步观测图形扩展的,点连式控制网,要求平均设站数不小于 1.6 。然后再回答以下问题: 1 图形有多少同步环?并标识出来。 2 边数最少的最简异步环有几条边?并标识出一个。 3 重复基线、平均设站数各是多少?
【简答题】根据下图中点的分布(不考虑已知点和未知点的区别,不顾及通视等情况),设计出基于三台 GPS 接收机同步观测图形扩展的,点连式控制网,要求平均设站数不小于 1.6 。然后再回答以下问题: 1 图形有多少同步环?并标识出来。 2 重复基线是多少?
【单选题】The government sees price controls as a way to combat inflation.
【简答题】In order to pr the typewriter keys from clashing together, Sholes therefore ______ finding ways to slow the typist down.
【简答题】作文: Directions: Based on what you’ve discussed above, write a short essay of about 120 words explaining What We Can Do to Help Slow Down Global Warming . Your essay should cover the following points: ...
【单选题】本实验中在切换测量表头的满偏电流和内阻电路时使用的开关为以下那种?
【多选题】Why do both domestic and international airline require security check?
A.
To prevent aircraft hijacking.
B.
For the safety of the passengers
C.
To increase airport revenue.
D.
To slow down the crowd.
【单选题】We respond to the thing that_______, but we rarely try to prevent it from going wrong in the first place.