大理石或花岗岩铺地面用于法施工时,结合层采用______。
A.干铺1:2.5水泥砂
B.干铺1:2石灰砂
C.干铺1:3:9混合砂
D.干铺1:3水泥砂加107胶水
参考答案:A
连词成句。
1. best, you, what, like, do
_______________________________________________
2. the, the, I, better, apples, like, than, bananas
3. thinks, this, he, the, best, actor, actor, is
开口于下鼻道的结构是()
A.泪腺
B.泪点
C.泪囊
D.泪小管
E.鼻泪管