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【单选题】
在HTML中, 中的method表示( )
A.
提交的方式
B.
表单所用的脚本语言
C.
提交的url地址
D.
表单的形式
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参考答案:
举一反三
【多选题】电话调查方法具有哪些优点 。
A.
抽样简便
B.
速度快
C.
效率高
D.
容易接近不易接近的对象
【简答题】The author believes that television in the United States has become important to most people because ________. A) it promotes family unity B) it helps them develop their speaking ability C) it affects...
【单选题】Over the past fifteen years, the largely urbanized Northeastern United States has shown more and more the influence of the Southwestern portion of the country. Once, very few people in New York City c...
A.
The lifestyle. of people in the Northeast has been enriched by the influence of the Southwestern states.
B.
Most residents of the Southwestern states regularly eat at Tex-Mex restaurants.
C.
Over the last fifteen years, residents of the Southwestern United States have increasingly adopted lifestyles similar to those of the Northeast.
D.
Tex-Mex dishes are an element of the regional cuisine of the Southwestern states.
E.
People in the Northeastern United States eat out more frequently than they did fifteen years ago.
【判断题】点在投影面上的投影为点,直线在投影面上的投影必为直线。
A.
正确
B.
错误
【判断题】直线倾斜于某投影面,则直线在该投影面上的正投影积聚为一点,平面倾斜于投影面,则平面在该投影面上的正投影积聚为一直线。
A.
正确
B.
错误
【简答题】投影面垂直线中,侧垂线在投影面上的投影积聚为一点,同时它在投影面和投影面上的投影反映实长。
【单选题】直线在某投影面上的投影为一点,平面图形在某投影面上的投影为直线段,这体现了投影的()。
A.
积聚性
B.
定比性
C.
平行性
D.
不可逆性
【单选题】当投影线互相平行,并与投影面垂直时,物体在投影面上所得的投影称为( )。
A.
点投影
B.
面投影
C.
正投影
D.
平行投影
【简答题】点在一个投影面上的正投影为 ;当直线AB与投影面垂直时,它在投影面上的正投影为 ;当直线AB与投影面平行时,它在投影面上的正投影为 。
【简答题】A Chinese writer Mo Yan has won the 2012 Nobel Prize in Literature, announced the Swedish Academy in Stockholm on Thursday.The win makes Mo Yan the first Chinese citizen to win the Nobel in its Ⅲ-year...
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