试题与答案

_____ I saw him, I knew what had happene

题型:选择题

题目:

_____ I saw him, I knew what had happened. [ ]

A. At the moment

B. For the moment

C. The moment

D. For a moment

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:在允许超挖的稳定土层中正常顶进时,管下部135~范围内不得超挖;管顶以上超挖量不得大于15mm;管前超挖根据具体情况确定,并制定安全保护措施。

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