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【简答题】
金属的机械性能主要包括强度、硬度、塑性、韧性、疲劳强度等指标,其中衡量金属材料在静载荷下机械性能的指标有____、____、____、____。衡量金属材料在交变载和冲击载荷作用下的指标有疲劳强度 和 ____。
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参考答案:
举一反三
【简答题】If A=[4,5,7;8,4,2;9,5,7],so A(1,2)*A(2,3)=(_);
【单选题】儿童语言发展的关键期为
A.
1—2岁
B.
2~3岁
C.
3~4岁
D.
4—5岁
【单选题】儿童语言发展的关键期为 ( )
A.
1—2
B.
2~3岁
C.
3~4岁
D.
4—5岁
【单选题】____any flowers on both sides of the street?
A.
Is there
B.
Has
C.
Have
D.
Are there
【判断题】半加器和全加器的区别在于半加器无进位输出,全加器有进位输出。
A.
正确
B.
错误
【单选题】专设成本项目的生产费用都是(    )。
A.
直接计入费用    
B.
间接计入费用
C.
直接生产费用    
D.
间接生产费用
【单选题】According to the story, we can conclude that ______.
A.
Emma told the truth , but her father told lies
B.
Emma told lies, but her father told her the truth
C.
both Emma and her father told lies
D.
both Emma and her father told the truth
【单选题】any flowers on both sides of the street?
A.
is there
B.
are there
C.
has
D.
have
【判断题】Dan Lucas promised to ask his son to make aphone call to Diane because Father told him Diane was interested in his son.
A.
正确
B.
错误
【判断题】直接生产费用不一定是直接计入费用,间接生产费用大多是间接计入费用。(    )
A.
正确
B.
错误
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