【单选题】【消耗次数:1】
在进行水平角度观测时,测回法适用于观测( )方向间的水平角度。
四个
一个
两个
三个
参考答案:
复制
纠错
相关题目
【单选题】 在进行水平角度观测时,方向法观测法适用于观测( )方向间的水平夹角。
①  二个及二个以上
②  三个及三个以上
③  一个及一个以上
④  四个及四个以上
【单选题】 用测回法观测水平角,可以消除( )误差。
①  2C
②  大气折光误差
③  对中误差
④  横轴误差
【单选题】 水平角观测时,各测回间要求变换度盘位置,其目的是?
①  改变起始方向的度盘度数
②  减小度盘偏心差的影响
③  便于检查观测的粗差
④  减弱度盘刻划误差的影响
【单选题】 用测回法观测一个水平角度时,测得上半测的回角值为:60°12 24 ,下半测回的角值为:60°12 06, 则一测回角值为( )
①  20°24 30
②  60°12 15
③  0°00 18
④  0°00 09
【单选题】 常用的水平角观测方法有( )。
①  高差法和视线高法
②  平量法和视线高法
③  测回法和全圆观测法
④  平量法和投影法
【单选题】 用光学经纬仪按测回法进行水平角度测量,当进行多测回法观测时,为了减少度盘刻划不均匀误差的影响,各测回间应按( )的差值变换度盘起始位置。
①  360/n
②  180/n
③  270/n
④  90/n
【单选题】 用经纬仪进行水平角度测量时,采用盘左、盘右两个盘位进行观测取平均值的方法,可以消除( )对观测结果的影响。
①  仪器整平的误差
②  外界条件的影响
③  仪器对中的误差
④  视准轴不垂直于横轴的误差
【判断题】 水平角观测时当偏心角和水平角是定值时,边长愈长仪器对中误差的影响愈大。( )
①  正确
②  错误
【单选题】 进行水平角度测量时,采用在各测回间变换度盘位置的方法,取各测回平均值,可以减弱光学经纬仪水平度盘刻划不均匀对水平角度测量结果的影响。
①  正确
②  错误
【单选题】 由一个水平角和一条水平距离测设一个点位的方法是( )。
①  直角坐标法
②  极坐标法
③  角度交会法
④  距离交会法
随机题目
【单选题】 23.___________ danger, he climbed the tower.
①  Regardless of
②  As regards
③  Regarding
④  With regard to
【单选题】 9.The doctor prescribed for me a new medicine that could ______ good sleep.
①  entertain
②  . enable
③  ensure
④  . require
【单选题】 28. ____for a long time, the fields are all dried up.
①  There has been no rain 
②  Having no rain 
③  There having been no rain
④  There being no rain
【单选题】 1.The authors purpose of writing
①  To point out the disadvantages of having only one child.
②  To display the disadvantages of having only one child.
③  To raise a controversial problem with its probable causes and effects
【单选题】 6.The stepmother was advised against ______ between her own son and the stepdaughter.
①  love
②  favor
③  favorite
④  favoritism
【单选题】 30.This house will probably come on the ____next month.
①  fair
②  market
③  shop
④  store
【单选题】 29.____me most was that the young boy who had lost both arms in an accident could handle a pen with his feet. 
①  That amazed
②  It amazed
③  Which amazed
④  What amazed
【单选题】 26. Which of the following is INCORRECT?
①  Another two girls
②  Few words
③  This work
④  A bit of flowers
【单选题】 2.Should any critical issue _______ the negotiation with foreign company, immediately report to the manager for advice.
①  arise from
②  interact
③  ensure
④  . make
【单选题】 3.It is impossible for a man like him to bear the ______ of being suspected as a thief.
①  fame
②  stigma
③  reputation
④  mark