【单选题】
如何显示这样一个边框：上边框 10 像素、下边框 5 像素、左边框 20 像素、右边框 1 像素? ( )
①
border-width:10px 5px 20px 1px
②
border-width:10px 20px 5px 1px
③
border-width:5px 20px 10px 1px
④
border-width:10px 1px 5px 20px
【单选题】
如何显示这样一个边框：上边框 10 像素、下边框 5 像素、左边框 20 像素、右边框 1 像素? ( )
①
border-width:10px 5px 20px 1px
②
border-width:10px 20px 5px 1px
③
border-width:5px 20px 10px 1px
④
border-width:10px 1px 5px 20px
【单选题】
一个盒子的宽（width）和高（height）均为300px，左内边距为30px，同时盒子有3px的边框，请问这个盒子的总宽度是多少？（ ）
①
333px
②
366px
③
336px
④
363px
【单选题】
对声明“margin:1px 2px 3px 4px”的解释正确的是：
①
左外边距1px、上外边距2px、右外边距3px、下外边距4px
②
右外边距1px、上外边距2px、左外边距3px、下外边距4px
③
上外边距1px、下外边距2px、左外边距3px、右外边距4px
④
右外边距2px、下外边距3px、左外边距4px、上外边距1px
【单选题】
设A,B为两随机事件，且A<img class=jc-formula data-tex=\supset src=https://huaweicloudobs.ahjxjy.cn/37A4B3C430EFA04CF480D02C0DFECE89.png style=vertical-align: middle; width: 20px; height: 17px; width=20 height=17/>B，则下列式子正确的是
①
P(A<img class=jc-formula data-tex=\cup src=https://huaweicloudobs.ahjxjy.cn/9BD598E68F21E65385221B2250659C3A.png style=vertical-align: middle; width: 22px; height: 14px; width=22 height=14/>B) = P(A)
②
P(AB)=P(A)<img width=99 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>
③
P(B|A)=P(B)
④
P(B-A)=P(B)-P(A)<img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=76 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/><img width=83 height=21 src=http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/spacer.gif word_img=file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif style=background:url(http://www.ahjxjy.cn/design/html/js/vender/ueditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd/>
【单选题】
阅读下面CSS代码，下面选项中与该代码段效果等同的是（ A ）。
.box { margin:10px 5px; margin-right:10px; margin-top:5px; }
①
.box { margin:5px 10px 10px 5px; }
②
.box { margin:5px 10px 0px 0px; }
③
.box { margin:5px 10px; }
④
.box { margin:10px 5px 10px 5px; }
【单选题】
CSS样式background-position:5px-10px代表的意义是（????）
①
背景图片向左偏移5px，向下偏移10px
②
背景图片向左偏移5px，向上偏移10px
③
背景图片向右偏移5px，向下偏移10px
④
背景图片向右偏移5px，向上偏移10px
【单选题】
CSS样式background-position:-5px10px代表的意义是（ ）
①
背景图片向左偏移5px，向下偏移10px
②
背景图片向左偏移5px，向上偏移10px
③
背景图片向右偏移5px，向下偏移10px
④
背景图片向右偏移5px，向上偏移10px
【单选题】
阅读下面的CSS代码，下列选项中与该代码段效果相同的是（????）。
?.box?{?margin:10px?5px;?margin-right:10px;?margin-top:5px;?}
①
.box{margin:5px10px10px5px;}
②
.box{margin:5px10px0px0px;}
③
.box{margin:5px10px;}
④
.box{margin:10px5px10px5px;}