可治妊娠恶阻、胎动不安的药物
A.砂仁B.厚朴C.大枣D.酸枣仁E.冬虫夏草
参考答案:A
After five hours'drive,they reached________they thought was the place they'd been dreaming of.[ ]
A. that
B. where
C. which
D. what
排管机在抓住钻杆时没有了动力源,可以依靠()来提供动力打开绞车刹车使钻杆下放。
A、液压泵
B、手压泵
C、储能器
D、气泵