在1:2000地形图上,求得两点图上的长度为5cm,高程HA=418.3m,HB=416.3m,则BA直线的坡度( )。
A. -0.02
B. 2℅
C. -2‰
D. +2‰
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下列( )不属于地物
A. 河流
B. 消火栓
C. 山顶上的岗亭
D. 停车场上的汽车
下列地物在地形图上用非比例符号表示的是( )
A. 耕地
B. 路牌
C. 管道
D. 通讯线
下列地物在地形图上用比例符号表示的是( )
A. 高压输电线
B. 导线点
C. 小路
D. 湖泊
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