题目内容

Which one is not inclued in the Four Keys about geospatial information engineering()

A. digitalization
B. networking
C. visualization
D. position

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Two integrations about Geospatial Information Engineering are “data integration” and “system integration”()

Remote sensing technology is a kind of unusual technology of Geospatial Information Engineering()

多线样式设置,新建包含四条直线的多线,其上线与下线距离为240,调用该样式绘制半砖墙体上四线窗户,其多线比例应该是()

A. 120
B. 240
C. 1
D. 0

质量为m的铁锤竖直落下,打在木桩上并停下,设打击时间为Dt,打击前铁锤速率为v,则在打击木桩的时间内,铁锤所受平均合外力的大小为()

A. mv/Dt
B. mv/D t-mg
C. mv/D t+mg
D. 2mv/Dt

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