"The subgrade side slope is defined as the ratio of the subgrade height to the slope width, when the subgrade height H=2.0 and the slope width b=3.0, therefore, the slope is ( )"
选项:
A:1.5:1;
B:2:3;
C:3:2;
D:1:1.5
发布时间:2024-04-20 10:30:29