自生自储式生储盖组合是指生油层和储集层同一层,盖层位于其上的组合形态。()
参考答案:错
We need to have factual knowledge ( ) our marketing strategy.
A.on which to base
B.which to base upon
C.to which base
D.and based on
线性隧道为哪一种皮损的特征性临床表现()
A.虫咬皮炎
B.疥疮
C.痒疹
D.脓疱疮
E.蜂蜇伤