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问题 名词解释

公债市场

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问答题

我国开展“一五”计划建设的重要条件有哪些？

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

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单项选择题

预作用喷水灭火系统管线的充水时间不得大于min，每一报警阀控制喷头数不宜超过（）个。

A、3，800

B、5，500

C、3，250
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