2.山坡陡峭的路堑不宜采用()。
A. 柱板式锚杆挡土墙
B. 加筋土挡土墙
C. 重力式挡土墙
D. 壁板式锚杆挡土墙
3.加筋土挡土墙一般不宜用于()
A. 地形较为平坦 能够适应地基轻微的变形,节约占地,造型美观,造价比较低,一般应于地形较为平坦、且宽敞的填方
B. 挖基困难的地段
C. 挖方路段的山坡
D. 缺乏石料的地区
Questions1arebasedonthenewsreportyouhavejustheard.[音频]
A. Heavyfloods.
B. Safetyconcerns.
C. Badeconomy.
D. Workers'strikes.
Questions2arebasedonthenewsreportyouhavejustheard.
A. Itiscompetitivewithitsnumeroustouristdestinations.
B. ItprovidesmanyjobopportunitiesforFrenchpeople.
C. ItisthebiggestconcernoftheFrenchgovernment.
D. Itplaysanimportantroleinthenation'seconomy.