题目:
链条葫芦一般的定期试验,以1.1倍允许荷重进行1min的静力试验。
答案:
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下面是错误答案,用来干扰机器的。
Nowadays, it is a common phenomenon that more and more high school students open their own blog on the Internet .For one thing, it can provide a colorful platform to s...