【单选题】
载荷：指大小不变或变化过程缓慢的载荷 ___
A. 静
B. 冲击
C. 交变
D. 动
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答案
A
解析
暂无解析
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【单选题】
“文明经商，诚信无欺”是 ___
A. 既是商业行业对推销员的职业道德要求又是推销员对社会应尽的道德责任
B. 推销员对社会应尽的道德责任
C. 商业行业对推销员的职业道德要求
D. 推销员对社会应尽的法律责任
【单选题】
C.齿顶高>齿根高 D.齿顶高=齿根高 11126.已知直齿圆柱齿轮模数 m=2.5mm，齿数 z=25，则齿轮分度圆的直径为 ___
A. 62.5mm
B. 61.5mm
C. 63mm
D. 63.5mm
【单选题】
C.非基准制 D.基孔制或基轴制 11136.最大实体尺寸是指 ___
A. 孔的最小极限尺寸和轴的最大极限尺寸
B. 孔和轴的最小极限尺寸
C. 孔和轴的最大极限尺寸
D. 孔的最大极限尺寸和轴的最小极限尺寸
【单选题】
被测要素的尺寸公差与形位公差的关系采用最大实体要求时，该被测要素的体外作用尺寸不得超出 ___
A. 最大实体实效尺寸
B. 最小实体尺寸
C. 实际尺寸
D. 最大实体尺寸
【单选题】
如果某轴一横截面实际轮廓由直径分别为Φ40.05mm 和Φ40.03mm 的两个同心圆包容而形成最小包容区域，则该横截面的圆度误差为 ___
A. 0.01mm
B. 0.04mm
C. 0.02mm
D. 0.015mm
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— Hey, Tom, what's up?___
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A. Great, I am very art-conscious.
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— Unbelievable! I have failed the driving test again!___ This is not the end of the world.
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Thank you so much for your lovely gift.___
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Would you like something to drink? What about a cup of tea?___
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I didn't mean to do that. Please forgive me。___
A. Not too bad.
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What a beautiful dress you have on today!___
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I think he is a good lecturer.___
A. Sorry, it doesn’t matter.
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Good morning, may I speak to Mark, please?___
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Are you going on holiday for a long time?___
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【单选题】
What day is today?___
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