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【简答题】
刀具的正常磨损形式按其发生的部位,可分为 、 、 。
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反馈参考答案：
举一反三
【单选题】Which of the following statements about the little quiz is CORRECT?
A.
The place of the quiz need to be fixed.
B.
The purpose is to find out if your boss is a madman.
C.
The only question is if a boss is a superficially charming person.
D.
One of the question is if a boss has a lot of real and helpful friends.
【单选题】下列关于钢构件长细比的表述中，哪项正确（ ）。
A.
长细比是构件长度与构件截面高度之比
B.
长细比是构件长度与构件截面宽度之比
C.
长细比是构件对主轴的计算长度与构件截面高度之比
D.
长细比是构件对主轴的计算长度与构件截面对主轴的回转半径之比
【单选题】The ovary has three layers of tissue. Generally, the _______becomes the fruit flesh. In many cases, he three layers are indistinguishable, and the term ______ is applied to denote all ovarian tissues ...
A.
exocarp, pericarp
B.
mesocarp, endocarp
C.
mesocarp, pericarp
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