名牌品质属于品牌文化的()。
A.核心层
B.制度层
C.物质层
D.销售层
参考答案:C
It is reported that the United States consumes ______ energy as the whole of Africa.
A.as four times
B.four times much
C.four times much as
D.four times as much
脑电图常规至少记录()。
A.10~20分钟
B.20~30分钟
C.30~40分钟
D.50~60分钟
E.1小时以上