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【简答题】
焊接变形矫正时,一般先锤击()以减少焊缝的拉应力。因为锤击会产生一定的(),使拉力部分抵消,并能(),提高焊接部位的(),然后再用锤展伸长法,或反向弯曲矫正法,分别矫正薄钢板和厚钢板变形。
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【多选题】评标的过程包括( )。
A.
评标的准备
B.
开标
C.
初步评审
D.
详细评审
E.
编写评标报告
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A.
二手物品交易
B.
二手车买卖
C.
房屋出租
D.
宠物、招聘信息
【单选题】已知集合 则 等于 (   )
A.
{0,1,2,3,4}
B.
C.
{-2,-1,0,1, 2,3,4}
D.
{2,3,4}
【单选题】Read this paragraph: Tomorrow is Jill's birthday. She is excited because she gets to pick where she will eat dinner. Will it be Mexican food at the Big Enchilada House? Or will it be fried chicken at ...
A.
Jill has many restaurants to choose from for her birthday.
B.
Jill loves Mexican food.
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The Pizza Shop has the best pizza in town.
D.
Jill will choose a place by flipping a cokin.
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【判断题】GIS 与 数据库系统DBS 的最大差别是前者具有处理图形数据功能,而后者没有。( )
A.
正确
B.
错误
【多选题】裁切工具有什么功能?
A.
裁掉图像的一部分
B.
对图像进行重新构图
C.
向外扩充画布
D.
为图像添加边框
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