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问题 单项选择题

在正常使用情况下，房地产开发商对销售的商品住宅的保修项目保修期限为2个月的是( )。

A．卫生洁具
B．管道渗漏
C．顶棚抹灰层脱落
D．管道堵塞

答案

参考答案：D

问答题

        战国时期，各国经过变法，封建制度逐步确立起来。地主阶级统治代替了奴隶主贵族的统治，地主阶级和农民阶级的矛盾成为社会的主要矛盾。我国封建社会形成了。

请结合所学知识回答：

（1）当时变法中最为彻底的是什么变法？发生在哪国？

                                                                                                                                                            

（2）这次变法的主要内容有哪些？有什么历史作用？

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

（3）请结合我国目前改革成就，谈谈你的感想。

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

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单项选择题

如果塔台报告地面风向10°，风速18kt，确定在07跑道着陆的侧风分量约为（）。

A、7kt

B、9kt

C、16kt
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