区间正线的最大坡度不宜大于20‰,困难条件下,经技术经济比较后不应大于30‰。
参考答案:对
日本最早的和歌总集是( )
A.《源氏物语》
B.《续日本纪》
C.《万叶集》
D.《紫式部集》
To those disabled athletes, the most important thing is _______ win a gold, ______take part.
A.not only; but also
B.either; or
C.both; and
D.not to; but to