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{{B}}Captain Cook Arrow Legend{{/B}} It was a great legend while it lasted, but DNA testing has{{U}} (51) {{/U}}ended a two-century-old story of the Hawaiian arrow carved from the bone of British explorer Captain James Cook{{U}} (52) {{/U}}died in the Sandwich Islands in 1779. "There is{{U}} (53) {{/U}}Cook in the Australian Museum," museum collection manager Jude Philip said not long ago in announcing the DNA evidence that the arrow was not made of Cook’s bone. But that will not stop the museum from continuing to display the arrow in its{{U}} (54) {{/U}}"Uncovered: Treasures of the Australian Museum," which{{U}} (55) {{/U}}include a feather cape presented to Cook by Hawaiian King Kalani ’opu’u in 1778. Cook was one of Britain’s A. statement B. suggestion C. proposal D. guess [判断题]橡胶垫缓冲装置的核心元件是EFG3缓冲器，当压力载荷低于压馈管触发力时，所有的冲击能量将由缓冲器来吸收。（ ）
A.正确 B.错误 [判断题]判断题: 基坑与基坑工程的区别在于基坑是一个地面以下的操作空间,而基坑工程是为了这个空间的安全和周边环境的安全所采取的一系列措施。()
A.正确 B.错误 [单选题]三显示自动闭塞、半自动闭塞、自动站间闭塞区段进站色灯信号机，显示一个（ ）色闪光和一个黄色灯光——准许列车经18号及以上道岔侧向位置，进入站内越过次一架已经开放的信号机，且该信号机防护的进路经道岔直向位置或18号及以上道岔侧向位置。
A.黄 B.绿 C.红 D.白 [简答题]问题同上
[多选题]手持电动工器具如有（ ）或有损于安全的机械损伤等故障时，应立即进行修理，在未修复前，不得继续使用。
A.绝缘损坏、电源线护套破裂 B.电源线护套油污 C.保护线脱落 D.插头插座裂开 [判断题]抬运铅液的道路应平坦,从槽上到灌铅处应搭设平稳、牢固的平台、马道,马道宽度 应 >0.9m。
A.正确 B.错误 [单选题]骨牵引时牵引针孔处应
A.纱布覆盖 B.滴75%酒精1～2次／曰 C.滴2%碘酒1～2次／日 D.滴70%酒精每4小时一次 E.滴2%碘酒每4小时一次 [简答题]1.(1.★★★56、问：简述防烟分区的作用有哪些？
我来回答: 提交
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