问题
填空题
失灵保护动作第一时限（）秒跳故障元件所在母线的母联开关及分段开关，第二时限（）秒跳故障元件所在母线上的所有元件。
答案
参考答案：0.3；0.5
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失灵保护动作第一时限（）秒跳故障元件所在母线的母联开关及分段开关，第二时限（）秒跳故障元件所在母线上的所有元件。
参考答案：0.3；0.5
完型填空．根据短文内容选择能填入空白处的最佳答案． Many people think that twins are exactly the same. 1 they are not. Ali and Alan are twin brothers. They look the same and 2 some ways they are the same. But in 3 ways they are very different. They are 4 very athletic. They both like soccer. But Ali 5 every day and Alan plays only 6 weekends. Alan likes 7 soccer on TV but Ali likes to play it, not to watch it. They are 8 outgoing and funny. But Alan is 9 more outgoing than Ali. Alan is also a little more serious than Ali about school work. They are very popular at school and they both have 10 friends.
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