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【简答题】
PASSAGE TWO One night last July, my 12-year-old car died on California's Santa Ana Freeway. It was an hour before sunset, and I was 25 miles from home. I couldn't reach anyone to pick me up, so I decided to take a bus. Not knowing the routes, I figured I’d just head east. A bus pulled up, and I asked the driver how far she was going. "Four more lights," she said. There was another bus I could take from there. This clearly was going to be a long night. She dropped me off at the end of her route and told me which bus to look for. After waiting 30 minutes, I began to think about a very expensive cab ride home. Then a bus pulled up. There was no lighted number above its windshield. It was out of service. But the door opened, and darned if it wasn't the same driver. "I just can't leave you here," she said. "This isn't the nicest place. I'll give you a ride home." "You'll drive me home in the bus?" I asked, perplexed. "No, I'll take you in my car," she said. "It's a long way," I protested. "Come on," she said. "I have nothing else to do." As we drove from the depot in her car, she began telling me a story. A few days earlier, her brother had run out of gas. A good Samaritan picked him up, took him to a service station and then back to his car. "I’m just passing the favor along," she said. When I offered her money as a thank-you, she wouldn't hear of it. "That wouldn't make it a favor," she said. "Just do something nice for somebody. Pass it along."
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参考答案:
举一反三
【判断题】波峰焊焊接质量由焊料温度、焊接时间、波峰的形状用高度决定的。
A.
正确
B.
错误
【简答题】什么是主动预约?
【判断题】焊接热循环是指在焊接热源作用下,焊件上某点的温度随时间变化的过程。( )
A.
正确
B.
错误
【简答题】下列焊接种类中,弧焰温度最高的是()。 A 、CO2气体保护焊 B、氩弧焊 C、等离子弧焊 D、手工电弧焊
【判断题】电阻对焊焊接时,焊接电流小,焊接区温度高,线材易引起“过烧”、”过热”现象,降低焊区的机械性能。
A.
正确
B.
错误
【多选题】旅游市场细分主要变数有 ( ) 。
A.
地理因素
B.
人口因素
C.
心理因素
D.
行为因素
E.
政治因素
【判断题】元器件的可焊性,在波峰焊焊接中对焊接质量没有影响,因为焊接时温度较高。
A.
正确
B.
错误
【单选题】办公自动化系统是一个综合性的系统。
A.
办公事务;
B.
办公管理;
C.
办公设备;
D.
办公决策
【多选题】最合适的焊接温度是让焊点上的焊锡温度比焊料的熔点高 度,手工焊接SMT元件时电烙铁的温度应比焊接温度再高 度。
A.
50
B.
100
【单选题】焊接工艺评定所用的焊接参数,原则上是根据( )来确定的,尤其是热输入、预热温度及后热温度。
A.
焊接工艺评定结果
B.
焊接的技术要求
C.
焊接的质量要求
D.
被焊钢材的焊接性试验结果
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