问题
单项选择题
材料强度较高，受力较大的构件，铆接时，一般选用（）的铆钉。
A.材料强度较高
B.材料强度较低
C.钢铆钉
D.铝铆钉
答案
参考答案：A
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材料强度较高，受力较大的构件，铆接时，一般选用（）的铆钉。
A.材料强度较高
B.材料强度较低
C.钢铆钉
D.铝铆钉
参考答案：A
At Life’s Crossroads Leaving high school, I had to choose a career path—medicine or business—before college started in three months, but I couldn’t decide. Both my uncles suggested I work for a month in a followed by a month in a hospital before I could know what to do. It seemed like a good idea. Then near the end of two months, I began thinking about my two . The bank had offered better working conditions. The hospital was full of excitement, but the training was hard. It seemed that the choices of was going to run out. The Last day of my work at the hospital, I was home when I saw a boy hit by a bus and lie in the road as the bus run away. stopped. I know if the boy stayed there, he would die very soon. So, without help, I lifted him into my car. The next day, I went to see him. His family were sitting around his bed. The doctor introduced me as “the person who saved the boy’s life”.Everyone got up, with smiles on their faces. The mother held my hands to her face, repeating again and again, “See, you are an angel!” What a feeling this was, to help save the life of another person! , I knew I wanted to do for the rest of my life. I went to college for my medical studies. We may spend a lot of time wondering about what to take in our lives, but sometimes you don’t really have to worry about your decisions. They are made for you by some quality(品质) in you—by what you’re to do when necessary.
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