题目内容

钢管跨越架宜用外径48~51mm的钢管,立杆和大横杆应错开搭接,搭接长度不得小于()mm
A 0.5
B 0.8
C 1.0

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Betty plans to have a travel in Germany this summer. Therefore, she wants to write a letter to a publishing house to buy some books about Germany. Please write a letter of purchasing for her. (about 100 words)

A hotdog vendor sold $45 worth of hotdogs at lunchtime Tuesday. Each hotdog cost $1.50. What percentage of his day's stock of hotdogs did the vendor sell at lunchtime?
(1) The vendor started the day with 120 hotdogs.
(2) The vendor sold twice as many hotdogs at dinnertime as he sold at lunchtime.

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