2009年中央一号文件提出,要加快发展畜牧水产规模化标准化健康养殖,采取市场预警、储备调节、增加险种、期货交易等措施,稳定发展()产业。
A、生猪
B、奶牛
C、渔业
参考答案:A
She is a crazy fan of this singer. ________ she listens to his songs hundreds of times, she will never get tired.
A.If
B.Unless .
C.As long as .
D.Even if
井下风动设备有(),装药器,装岩机,装运机,放矿闸门等。