What was used to carry most mail after the colonies became a What was used to carry most mail after the colonies became a nation? 分类:公共英语五级 题型:填空题 查看答案
How many people depend on local rice and food in South Asia How many people depend on local rice and food in South Asia currently?A.More tha 分类:公共英语五级 题型:填空题 查看答案
下导管时,其底口距孔底的距离不大于( ),同时要能保证首批混凝土灌筑后能埋住导管至少( )。 下导管时,其底口距孔底的距离不大于( ),同时要能保证首批混凝土灌筑后能埋住导管至少( )。A.40~50cm 50cm B.60~80cm 100cm 分类:公共英语五级 题型:填空题 查看答案