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【简答题】
CAD用.zip 学生按照各自学号与图形编号顺序每人对应绘制3个图形,保存在一个文件里面;要求:图形中点划线为红色0.15;图形轮廓线为白(黑)粗实线0.6;填充部分为蓝色细实线0.15;尺寸标注为绿色细实线0.15。递交时间截至到5.8。
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举一反三
【单选题】关于余气系数α,下列叙述中错误的是( )。
A.
余气系数的物理意义表示贫油和富油程度
B.
α<1时为富油,α>1时为贫油
C.
航空发动机的余气系数一般为3.5~4.5
D.
在燃烧室的燃烧区和点火区,余气系数总是接近于5,这样对燃烧最有利
【单选题】What are the keys to product success?
A.
The product must meet customer needs better than other products.
B.
The firm that brings out the product must be skilled in all phases of marketing.
C.
The firm that brings out the product must be technically proficient.
【单选题】2008 is a speical number， I think，that will never be forgotten by the Chinese people．
A.
one
B.
it
C.
the one
D.
what
【简答题】What are some product lines that use common parts across many products? What are the advantages of doing this?
【单选题】关于余气系数α,下列叙述中错误的是( )。
A.
余气系数的物理意义表示贫油和富油程度
B.
α<1时为富油,α>1时为贫油
C.
航空发动机的余气系数一般为25~45
D.
在燃烧室的燃烧区和点火区,余气系数总是接近于1,这样对燃烧最有利
【多选题】What are the four stages of the product life cycle?
A.
introduction
B.
growth
C.
maturity
D.
saturation
【简答题】*What are the (1)____ of this product? *What are the (2)____ of this product? *What are the (3)____ of this product? *What are the (4)____ of this product?
【简答题】阅读理解。 As computers become all the morepopular in China, Chinese people areincreasingly relying on computer keyboardsto input Chinese characters. But if they usethe computer too much, they may end up f...
【简答题】What are the product characteristics of Aimer Kids?
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