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1、考试作业-2018下半年-答案。一、单选题(每小题5分,共50分)1.我国高斯统一坐标系统的Y轴正方向指向(A)方向。A.东B.南C.西D.北2.地面点至假定水准面的铅垂距离称为(B)。A.绝对高程B.假定高程C..海拔D.高差3.大地水准面是与(C)重合,向大陆、岛屿延伸的封闭曲面。A.水准面B.参考椭球面C.平均海水面D.水平面4.根据水准测量原理,欲测定两点间高差,须利用水准仪提供的(A)。A.水平视线B.视线C.视准轴线D.倾斜视线5.不考虑误差时,同一方向水平度盘盘左读数与盘右读数相差(C)。A.0°B.90°C.180°D.270°6.同一直线上的两个端点处的两个方位角(B)
2、。A.相同B.相差180°C.270°D.相差90°7.直线AB的坐标方位角为170º,对应坐标增量△xAB,△yAB的符号分别为(C)。A.+,+B.+,-C.-,+D.-,-8.一圈高程低的等高线套着两组高程高的等高线的地方是(D)。A.洼地B.悬崖C.陡崖D.鞍部9.在大比例尺地形图中,(B)用比例符号表示A.围墙B.运动场C.高压线D.消防栓10.测设待定点时,不需要测设距离的测设方法是(D)。A.直角坐标法B.距离交会法C.极坐标法D.角度交会法二、判断题(在题前括号中,正确打“√”,错误打“×”,每小题5分,共25分)1.(√)地面某点处的铅垂线与该点的水准面垂直。2.(√)
3、水平角的取值范围是0°~360°;3.(×)导线中某点左角与右角之和等于180°;4.(×)地形图上两等高线相交,实地上这两条等高线也相交;5.(√)测定矩形建筑物3个角点,能满足“概括全貌、点少、能够检核”测图原则。三、计算题(每小题5分,共25分,4、5为填表计算题,必须在表格中完成计算)1.已知A点高程HA=29.542m,B点至A点的高差hBA=−3.458m,求B点高程HB?答:HB=HA+hBA=29.542-3.458=26.084m2.已知A点坐标XA=319.057m,YA=433.096m;A至P的坐标方位角AP=138°05'05"和距离DAP=100.000m,求
4、P边坐P点坐标Xp、Yp。答:Xp=XA+DAP*cosAP=319.057+100.000*cos138°05'05"=244.644mYp=Yp+DAP*sinAP=433.096+100.000*sin138°05'05"=499.899m3.三角形闭合导线的三个内角观测值分别为68°22′34″、52°18′18″、59°19′38″,计算角度闭合差fb、fb容(容许误差为±60″),判断是否合格,计算各角改正数v。答:fb=(b1+b2+b3)-(3-2)*180°=(68°22′34″+52°18′18″+59°19′38″)-180°=30″fb容=±60″=±60″=±1
5、03″fb6、计高程b应P33.70032.6001.10020m桩32.4001.30040m桩32.2001.500完形填空AnotherusefulmethodforimprovingBBDCABDCBAApersonwhobelievesthatheisincapablewillBCDABCBCACAsurveywascarriedoutlastyearCADCBBCADBHehasbeenproclaimed"thefinestmindACDABCBBABHomesicknessisverycommonamongBADCADBBCATheproficientathletepossessesn7、aturalBACDADBCABTherewereoncethreesonsofawealthybusinessman46.whenever 47..used 48..intheleast 49..each 50..elder51..as 52..joined 53..unpopular 54..changing55.making Firecanhelppeopleinmanyways.BDCBAABCDBForthefirstt
6、计高程b应P33.70032.6001.10020m桩32.4001.30040m桩32.2001.500完形填空AnotherusefulmethodforimprovingBBDCABDCBAApersonwhobelievesthatheisincapablewillBCDABCBCACAsurveywascarriedoutlastyearCADCBBCADBHehasbeenproclaimed"thefinestmindACDABCBBABHomesicknessisverycommonamongBADCADBBCATheproficientathletepossessesn
7、aturalBACDADBCABTherewereoncethreesonsofawealthybusinessman46.whenever 47..used 48..intheleast 49..each 50..elder51..as 52..joined 53..unpopular 54..changing55.making Firecanhelppeopleinmanyways.BDCBAABCDBForthefirstt
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