未饱和空气中的水蒸气处于( )状态。
A.干饱和蒸汽
B.过冷蒸汽
C.湿蒸汽
D.过热蒸汽
参考答案:D
骨巨细胞瘤X线表现()
A.外生性,可见明显破坏
B.位于干骺端及骺端的溶骨性破坏
C.位于干骺端,可见有分格
D.骨破坏,可见Codman三角
E.骨性破坏,可见片状钙化
Please remind me ____ he said he was going. I may be in time to see him off.
A.where
B.when
C.how
D.what