选择题:At least 76 people died when a Sibir Airlines Tu-1

题目内容:
At least 76 people died when a Sibir Airlines Tu-154 ________ into the sea about 180 kilometers from the Russian resort of Sochi on Thursday. A dropped
B jumped
C plunged
D declined

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按物资的使用范围分为:基本建设用料、()、经营维修用料、科学研究用料、技术措施用料、工艺装备和非标准

按物资的使用范围分为:基本建设用料、()、经营维修用料、科学研究用料、技术措施用料、工艺装备和非标准设备用料,等等A 生产产品用料B 生活用料C 销售用料D 体

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