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【简答题】
设函数【图片】的最大(小)值为【图片】, 此时对应的【图片】,则【图片】
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【判断题】当移出断面配置在剖切位置的延长线上,且断面图形对称,则可不标注;移出断面也可以配置在图纸的其他适当位置,这时应标注,若断面图形对称,则可省略投影方向线。
A.
正确
B.
错误
【单选题】Who's that girl?
A.
This is my sister.
B.
This is my brother.
C.
That is my sister
D.
That is my brother.
【简答题】单相逆变器一般有三种结构形式: 推挽式,_______,__________.
【单选题】What is a characteristic of cardinal mark?
A.
Light rhythms indicating directional orientation
B.
Vertical stripes
C.
Square or triangular topmarks
D.
Number-letter combinations for identification
【单选题】—What’s the matter with Christine? —A letter from her parents in California________an attack of h
A.
31．—What’s the matter with Christine? —A letter from her parents in California________an attack of homesickness. A．took off
B.
gave off
C.
sent off
D.
set off
【单选题】I just wonder ____ that delights the whole family so much.A．what it isB．what he doesC．how it isD
A.
31. I just wonder ____ that delights the whole family so much. A．what it is
B.
what he does
C.
how it is
D.
how he does
【单选题】— _____________ Chinese books can you see? — 31. [ ]
A.
How many
B.
How much
C.
What colour
【判断题】当移出剖面配置在剖切位置的延长线上，且剖面图形对称，则可不标注；移出剖面也可以配置在图纸的其他适当位置，这时应标注，若剖面图形对称，则可省略投影方向线。
A.
正确
B.
错误
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