问题
单项选择题
在体积含量相同情况下，SiC晶须与颗粒增强MMC（）
A、具有基本相同的抗拉强度和屈服强度。
B、具有基本相同的拉伸模量。
C、具有基本相同的断裂韧性。
D、具有基本相同的蠕变性能。
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
在体积含量相同情况下，SiC晶须与颗粒增强MMC（）
A、具有基本相同的抗拉强度和屈服强度。
B、具有基本相同的拉伸模量。
C、具有基本相同的断裂韧性。
D、具有基本相同的蠕变性能。
参考答案：B
Embroidering(刺绣) When I was a little boy living in New York, my mother used to embroider a great deal. I would sit at her knee and look up from the 36 and ask what she was doing. She 37 me that she was embroidering. I told her that it looked like a mess from where I was. As from the underside I watched her work within the 38 of the little round hoop（铁环）that she held in her hand, I complained to her that it sure looked 39 from where I sat. She would smile at me, look down and 40 say, "My son, you go about your 41 for a while, and when I am finished with my embroidering, I will put you on my 42 and let you see it from my side." I would wonder why she was using some dark threads along with the 43 ones and why they seemed so jumbled（混乱的）from my 44 . A few minutes would pass and then I would hear Mother's voice say, " Son, come and sit on my knee." This I did only to be surprised and 45 to see a beautiful flower or a sunset. I could not 46 it, because from underneath it looked so messy. Then mother would 47 to me, "My son, from underneath it did look messy and jumbled, but you did not realize that there was a 48 plan on the top. It was a 49 . I was only following it. Now look at it from my side 50 you will see what I was doing." Many 51 through the years, I have 52 up to my Heavenly Father and said, “ Father, what are You doing? ” He 53 , “ I am embroidering your 54 . ”I say, " But it looks like a mess to me. It seems so jumbled. The threads seem so dark. Why can't they all be bright ? " The Father seems to tell me, " My child, you go about your business of doing My business, and one day I will bring you to 55 and put you on my knee and you will see the plan from My side. "
|