- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
對(duì)于中等規(guī)模，頻繁發(fā)生的崩塌，線路通過時(shí)主要采?。ǎ┑拇胧?
A.明洞
B.攔石墻
C.攔石網(wǎng)
D.繞避
