颅中窝骨折时可出现()。
A.嗅觉丧失
B.球结膜下出血,眼睑青紫、肿胀
C.咽后壁出血,脑脊液耳漏
D.声音嘶哑
E.乳突部淤血,吞咽困难
参考答案:C
private cars are bringing us convenience, they may also cause traffic accidents and pollution.
A.When
B.Since
C.while
D.As
船首抢滩时,应保持船身与等深线:().
A.平行
B.垂直
C.成尽可能小的角度
D.任何角度皆可