题目内容

WXSS具有CSS大部分特性,并在此基础上做了一些扩充和修改。

A. 对
B. 错

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WXSS支持使用选择器来为某个元素设置样式,其使用方法和CSS选择器基本相同。

A. 对
B. 错

B. Summary of TextSummaryOn the tour of France, the sight of the Mediterranean Sea reminded me of last summer when I, as a good swimmer, had hopped from the highest diving board at a pool and, as a result, hit the water with an impact so incredible that I ____( ). From then on,my fear of water refused to ____( ). In the ____( ) of my painful memory, however, I heard shouting in French and saw a mob of people running into the sea with their clothes on. I realized the ____( )with horror - rough waves were forcibly dragging a boy out to the sea. But despite the rescuers’ great effort, they made little progress in reaching the drowning boy. ____( ) the situation, I found it was the quickest access to the boy to go out on the jetty. I raced down the beach but when hit with water at the ridge of the jetty, I whirled around, convinced that someone else would save the boy. To my ____( ), no one was there.Seen from there, the boy was being ____( ) by vicious waves. Without any more delay, I threw myself into the water. I reached the boy in time to have him ____( ). After overcoming the ____( ) through swimming sideways first and then floating to rest, we slowly made our way to safety. And the moment my hand hit the jetty, nothing signified my ____( ) as much as just letting myself go in the water.

分析正交实验结果时,极差最大的因素是()

A. 最佳水平
B. 最佳组合
C. 主要因素
D. 可控因素

在一次正交实验中,三个因素A,B,C,他们的Ka1,Ka2,Ka3为41,48,61;Kb1,Kb2,Kb3为47,55,48;Kc1,Kc2,Kc3为45,57,48。因素的主次排列为()

A. C-B-A
B. A-C-B
C. B-A—C
D. A-B-C

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