一头部外伤的患者有“昏迷——清醒——昏迷”的病史,可提示有()
A.脑震荡
B.颅骨骨折
C.脑水肿
D.硬膜外血肿
E.硬膜下血肿
参考答案:D
The names of the currencies of U. S. A. U. K and Germany are called ______ respectively.
A. US Dollar, Pound Sterling and Deutsche MarkB. US Dollar, Deutsche Mark and Pound SterlingC. US Dollar, Guilder and Deutsche MarkD. US Yuen, Pound Sterling and Deutsche Mark
下面哪种氟化物不用于含氟牙膏()。
A.氟化钠
B.氟化钙
C.氟化亚锡
D.氟化胺
E.单氟磷酸钠