The naughty boy! Hewhere he leaves his things.
A. always forget
B. will always forget
C. is always forgetting
D. has always forgotten
查看答案
点的正面投影到ox轴的距离，等于空间点到面的距离
A. H
B. V
C. W
点的水平投影到OX轴的距离，等于空间点到面的距离
A. H
B. V
C. W
点的侧面投影到OZ轴的距离，等于空间点到面的距离
A. H
B. V
C. W
点的侧面投影到OY轴的距离，等于空间点到面的距离
A. H
B. V
C. W
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