试题与答案

将经过70%拉伸冷变形的长铜棒(Cu的熔点为1083℃)一端浸入冰水中,另一端加热到

题型:问答题

题目:

将经过70%拉伸冷变形的长铜棒(Cu的熔点为1083℃)一端浸入冰水中,另一端加热到850℃的高温,过程持续一个小时。
1.画出沿该试棒长度方向温度分布图,并标出再结晶温度的大概值,对应图上的温度分布画出样品中金相组织连续变化示意图和硬度变化曲线。
2.解释组织和硬度变化。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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I shouldn’t let it bother me. It really doesn’t matter anyway. But it does bother me ! All those people are preparing to (21) a new century, a new millennium (千年) as well. And it just isn’t (22) !
Most of us schedule our lives by the Gregorian (23) . Our years are measured from the (24) of Christ. The first year of the first century is 1, or 1 A.D. The last year of that century is the year 100. Simple Yes! A century is 100 (25) long. A millennium is 1,000 years long, which is (26) ten centuries.
Since the last year of the first century is the year 100, the first year of the (27) century is 101. Follow that pattern, century by century and you’ll get my (28) . The year 2000 is the last year of the twentieth century. After all, (29) thousand means twenty hundreds. Twenty hundred years means twenty centuries. The year 2000 is the (30) , the final, the one that’s still here, year of the twentieth century!!!!
I know, I’m getting too (31) . But it isn’t fair, While most people will really be enjoying this coming (32) celebration, those of us in the know will be yawning. Everyone else will be (33) for the new millennium and we’ll be saying, "It’s not until next year."
I don’t agree with the (34) , "Ignorance is bliss." But in this case, perhaps it’s (35) .

A.get

B.bring

C.celebrate

D.cheer

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