20.一块广告牌高1.6米,在图纸上它的高度是5厘米,这张图纸的比例尺是( )
0 154757 154765 154771 154775 154781 154783 154787 154793 154795 154801 154807 154811 154813 154817 154823 154825 154831 154835 154837 154841 154843 154847 154849 154851 154852 154853 154855 154856 154857 154859 154861 154865 154867 154871 154873 154877 154883 154885 154891 154895 154897 154901 154907 154913 154915 154921 154925 154927 154933 154937 154943 154951 199269
A. | 1:32 | B. | 32:1 | C. | 1:320 |