简述宝石的发光性。
参考答案:
一些宝石矿物能在X-射线或紫外线照射下发射出并呈现一定颜色的可见光的现象。
男性,28岁,右胸被刀刺伤半小时后到医院就诊,明显呼吸困难。体格检查发现创口处有气体进出。
若该患者病情稍稳定后,经X线摄片检查发现右肺萎陷达80%,两侧肋膈角清晰,则进一步的处理应是()
A.剖胸探查
B.人工呼吸
C.胸腔闭式引流
D.胸腔穿刺排气
E.保持创口处排气通畅
小题1:There are three ______________ (特色菜) for today.
小题2: Turn left at the first ___________ (十字路口) and you can see a ___________ (餐馆) on your ___________ (右边) .
小题3: Eason Chan is a ___________ (受欢迎的) __________ (歌手) in our country.
小题4: His sister is of medium ___________ (身高) and has ___________ (直的) hair.
小题5: There is a _________ (图书馆) in our school.
小题6:Can you ___________ (描写) your friend for me?
小题7:The birthday foods bring good ___________ (运气) to the birthday ___________ (人).