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【单选题】
下面关于CSS的说法错误的有（ ）。A.
CSS可以控制网页背景图片
B.
margin属性的属性值可以是百分比
C.
整个body可以作为一个盒子
D.
margin属性不能同时设置四个边的边距
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举一反三
【单选题】2812d65394cd3eb50a531c38a1c94ec8fd4464f58c9229c96aedea15dc9cb6eb
A.
食含囊蚴的生鱼虾
B.
食含囊蚴的生溪蟹
C.
误食含囊尾蚴的猪肉
D.
食含囊蚴的生荸荠
E.
吞食含有活的幼虫包囊的肉类
【简答题】A．Because she was born there. B．Because she worked there last year. C．Because her sister vacationed there last year. D．Because her sister and her vacationed there last year.
【简答题】A．Because their value went up every year. B．Because they were expensive. C．Because they were terrible. D．Because they were attractive.
【单选题】复合杠杆作用的意义在于能够估计出:
A.
销售额变动对每股利润的影响
B.
销售额变动对息税前利润的影响
C.
息税前利润变动对每股利润的影响
D.
基期边际贡献变动对基期利润的影响
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