批发市场在我国农产品市场体系中处于（）地位。 ["基础","辅助","核心","引导"]
《铁路运输收入票据管理工作规则》客货运输票据的保管期限：票据收发月报为（）。 ["1年","3年","10年","15年"]
我国煤炭的一个显著特点是原生灰分高（）。 ["介质系统","可选性差","流动状态","末煤"]
Which IPv6 address would you ping to determine if OSPFv3 is able to send and receive unicast packets across a link？ （） [" anycast address"," site-local multicast"," global address of the link"," unique local address"," link-local addre"]
如何评价洋务运动在中国经济近代化历史进程中的作用？
分水岭。
