问题
单项选择题
选择合理的装焊顺序，采用不同的焊接方向和顺序，焊前进行焊件反变形，或把焊件刚性固定，对无淬硬倾向钢材强迫散热，其目的是（）。
A、防止和减少焊件结构的变形；
B、容易焊接；
C、防止和减少焊件结构扭曲变形；
D、防止和减少焊件结构应力。
答案
参考答案：A
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选择合理的装焊顺序，采用不同的焊接方向和顺序，焊前进行焊件反变形，或把焊件刚性固定，对无淬硬倾向钢材强迫散热，其目的是（）。
A、防止和减少焊件结构的变形；
B、容易焊接；
C、防止和减少焊件结构扭曲变形；
D、防止和减少焊件结构应力。
参考答案：A
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| At the end of my senior year of high school, I got a job working at a local coffee shop. I thought the job would be easy and stress-free. I 1 myself pouring the best coffees, making delicious doughnut (炸面包圈), and becoming friends with 2 customers. But I wasn't 3 the people with enormous orders, the women who 4 that the coffee was much too creamy (全乳脂的), or the men who wanted their iced coffees 5 again and again until they reached perfection. I couldn't seem to 6 anyone. One rainy day, one of my regular customers came in looking 7 . He said he felt like getting in bed, pulling the 8 up over his head, and staying there for a few years. I knew exactly how he felt. 9 he left, I handed him a bag along with his iced coffee. He was 10 , since he hadn't ordered anything but coffee, I had given him his favorite type of doughnut. "It's 11 me," I told him. "have a nice day." He smiled and thanked me before heading back out into the 12 . The next day, it was still raining. I 13 my afternoon hanging out the window, handing people their 14 . I was completely wet and freezing cold. 15 , no one was tipping that day. Every time I looked into our 16 tip jar, I grew more depressed. In the evening, the customer from the day before drove up to the window. He handed me a pink rose and a 17 . He said that not many people took time to 18 others and he was glad there were still people like me in the world. With a friendly wave, he drove away. I ran to the back of the shop and read the note. It read: Christine, Thanks for being so sweet, kind and thoughtful yesterday. It's so nice to meet someone who's genuinely (真诚地) nice. Please don't change your 19 ! Have a great day! —Hank After that, whenever I felt depressed or sick of coffee, I thought of Hank and his kindness. Then I would smile, hold my head up high, 20 my throat and ask politely, "How can I help you?" | ||||
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