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【单选题】
下列关于网络技术中关键线路的描述正确的是()。A.
各项活动的总时差大于0
B.
各项活动的总时差小于0
C.
线路持续时间最短
D.
线路持续时间最长
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】Bob never does his homework _________ Mary. He makes lots of mistakes.
A.
so careful as
B.
as careful as
C.
not as carefully as
D.
as carefully as
【单选题】HTML、CSS、JavaScript是网页设计最核心也是最基础的技术，表示网页行为的是（ ）。
A.
HTML、CSS、JavaScrip
B.
HTML
C.
CSS
D.
JavaScrip
【单选题】Bob often _____ his _____ after supper. [ ]
A.
do; homeworks
B.
does; homework
C.
begin; homework
D.
finishes; homeworks
【多选题】在HTML文件中使用CSS样式,有下列哪几种方式?
A.
行内声明，直接将CSS样式写在HTML标记中
B.
内嵌声明，将CSS样式放在HTML文件的标头区域 标记中
C.
链接外部样式文件，先将CSS样式表存储为独立的文件（*.css)，然后在HTML文件中以链接的方式声明
D.
插件声明，以jQuery Mobile插件的形式插入
【简答题】Bob’s father is ill in bed. His mother does all the housework goes to buy medicine (药) for him. She is very . Now Bob’s mother is the house. She needs some water. She Bob to get some for . At the mome...
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