A、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px; TEXT-DECORATION: none">等高线不能相交</span>
B、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px; TEXT-DECORATION: none">等高线是闭合曲线</span>
C、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px">山脊线不与等高线正交</span>
D、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px">等高线平距与坡度成正比</span>
E、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 14px; TEXT-DECORATION: none">等高线密集表示陡坡</span>