问题
填空题
测量上限大于150mm的外径千分尺,可以只检测微头的示值误差,用()量块,借助相应准确度的专用检具按()的千分尺受检点进行检定,其示值误差不超过()。
答案
参考答案:5等或2级;0-25mm;±3μm
测量上限大于150mm的外径千分尺,可以只检测微头的示值误差,用()量块,借助相应准确度的专用检具按()的千分尺受检点进行检定,其示值误差不超过()。
参考答案:5等或2级;0-25mm;±3μm
完形填空 | ||||
One day I was mailing a package in the office when I saw a woman approach the postal clerk. "I found this lying on the floor by my box, " she said, "and I'd like to hand it in." The postal clerk laughed and said, "I've _1_ had anyone hand in money before, but I'll put it in an envelope. Please write your name and telephone number on the front. If no one 2 the money, we'll call you." The lady explained, "I've lost money before and it was never turned in. I remember how I 3 . I don't want to make someone else feel that way." The postal clerk responded with her own 4 of having dropped some money while shopping and not knowing it 5 she was preparing to pay for her purchases. I admit that I'd slowed down on my preparations as I was busy listening to their 6 . The lady who handed in the money left the post office. At almost the same time a very young woman 7 . She approached the postal clerk and asked, "Has anyone turned in any money recently?" She told the clerk the 8 , and the clerk laughed again. "As a matter of fact, yes!" she responded. "It was turned in just several 9 ago." Then a young man ran in and said, "It's not on the ground!" She turned to him and said, "Someone turned the money in!" The look of 10 on both of these young people's faces is a memory I'll have for a long time. The young lady told how she thought the money was 11 in her coat pocket when she walked in to check her mailbox. Only when she arrived home did she 12 that it was no longer there. Yes, I finally finished preparing the package to be mailed, but I was the one who had a very special surprise in the post office. | ||||
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