问题
单项选择题
钢轨端部连接线（含跳线、回线）焊接不良造成的轨头横向裂纹的代码为（）。
A、22320
B、23327
C、20318
D、31320
答案
参考答案：C
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钢轨端部连接线（含跳线、回线）焊接不良造成的轨头横向裂纹的代码为（）。
A、22320
B、23327
C、20318
D、31320
参考答案：C
Jack 41 in a small town in England. He always stayed in England 42 his holidays, but last year he thought, “I’ve never been to 43 countries. All my friends go to Spain, 44 they like it very much, so this year I’m going there, too.” So he got on a 45 to Spain and 46 at the airport of the capital, Madrid, and stayed in a hotel for a few days. On the first morning he went 47 for a walk. In England people drive on the left, but in Spain they drive on the right. Jack forgot about this, and 48 he was walking on a busy street, a bicycle knocked him down. Jack 49 on the ground for a few minutes and then he sat up and said, “Where am I?” Just then an old man selling maps went past him. When he heard Jack’s words, he said to him 50 , “Maps of the city, sir?”
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