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【单选题】
QT500-7 中 QT 表示 ( ) 。
A.
青铜
B.
黄铜
C.
D.
球铁
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【简答题】某孔、轴配合，基本尺寸为φ50mm，孔公差为IT8，轴公差为IT7，已知孔的上偏差为+0.039mm，要求配合的最小间隙是+0.009mm，试确定孔、轴的尺寸。
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【单选题】The author's chief argument against high heels is that they ______.
A.
pose a threat to lawns
B.
are injurious to women's health
C.
don't necessarily make women beautiful
D.
are ineffective as a weapon of defense
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【单选题】Frey considers it unfortunate for society to ______.
A.
pose more stress on men than on women
B.
expect women to respond in the same way to stress as men
C.
restrain men and women from crying
D.
be ignorant of the disorders aggravated by stress
查看完整题目与答案
【简答题】某孔、轴配合，公称尺寸为 ，孔公差为IT8，轴公差为IT7，已知孔的上偏差为+0.039mm，要求配合的最小间隙为+0.009mm，试确定孔、轴的尺寸。
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【判断题】铣孔时铣刀沿顺时针方向进给时为顺铣,表面质量好,刀齿磨损小。
A.
正确
B.
错误
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【单选题】According to the speaker, what is Bethany MacKay scheduled to do in the afternoon?
A.
Pose for two different photo shoots.
B.
Meet with directors at Magno Models, Inc..
C.
Have lunch with friends of Lars Vensin..
D.
Go shopping at Breedz Department Store.
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【单选题】已知孔φ50+0.039 0mm和轴φ50-0.025 -0.050mm配合,则配合后属于( )配合。
A.
间隙配合
B.
过盈配合
C.
过渡配合
D.
间隙配合或过渡配合
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【单选题】According to the passage, DVD business will ______ .
A.
pose great threat to film industry
B.
help to reduce the risk involved in making movies
C.
reduce the revenues of films
D.
continue to boom for decades
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【简答题】孔、轴配合,若EI=+0.039, es=+0.039, 是 配合;若ES=+0.039, ei=+0.039, 是 配合;若ES=+0.039, es=+0.039, 是 配合。
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【简答题】50mm的基孔制孔轴配合，已知其最小间隙为+0.05mm，则轴的上偏差是______。
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【简答题】某孔、轴配合，基本尺寸为φ50mm，孔公差为IT8，轴公差为IT7，已知孔的上偏差为+0.039mm，要求配合的最小间隙是+0.009mm，试确定孔、轴的尺寸。
查看完整题目与答案
【单选题】The author's chief argument against high heels is that they ______.
A.
pose a threat to lawns
B.
are injurious to women's health
C.
don't necessarily make women beautiful
D.
are ineffective as a weapon of defense
查看完整题目与答案
【单选题】Frey considers it unfortunate for society to ______.
A.
pose more stress on men than on women
B.
expect women to respond in the same way to stress as men
C.
restrain men and women from crying
D.
be ignorant of the disorders aggravated by stress
查看完整题目与答案
【简答题】某孔、轴配合，公称尺寸为 ，孔公差为IT8，轴公差为IT7，已知孔的上偏差为+0.039mm，要求配合的最小间隙为+0.009mm，试确定孔、轴的尺寸。
查看完整题目与答案
【判断题】铣孔时铣刀沿顺时针方向进给时为顺铣,表面质量好,刀齿磨损小。
A.
正确
B.
错误
查看完整题目与答案
【单选题】According to the speaker, what is Bethany MacKay scheduled to do in the afternoon?
A.
Pose for two different photo shoots.
B.
Meet with directors at Magno Models, Inc..
C.
Have lunch with friends of Lars Vensin..
D.
Go shopping at Breedz Department Store.
查看完整题目与答案
【单选题】已知孔φ50+0.039 0mm和轴φ50-0.025 -0.050mm配合,则配合后属于( )配合。
A.
间隙配合
B.
过盈配合
C.
过渡配合
D.
间隙配合或过渡配合
查看完整题目与答案
【单选题】According to the passage, DVD business will ______ .
A.
pose great threat to film industry
B.
help to reduce the risk involved in making movies
C.
reduce the revenues of films
D.
continue to boom for decades
查看完整题目与答案
【简答题】孔、轴配合,若EI=+0.039, es=+0.039, 是 配合;若ES=+0.039, ei=+0.039, 是 配合;若ES=+0.039, es=+0.039, 是 配合。
查看完整题目与答案
【简答题】50mm的基孔制孔轴配合，已知其最小间隙为+0.05mm，则轴的上偏差是______。
查看完整题目与答案