Before the nineteenth century,
scientists with an interest in the sea were few and far between. Certainly Newton considered some theoretical’ aspects of it in his writings, but he was {{U}} (26) {{/U}} to go to sea to {{U}} (27) {{/U}} his work. For most people the sea was {{U}} (28) {{/U}}, and with the {{U}} (29) {{/U}} of early international travelers or others who earned a living from the sea, there was little reason to ask many questions about it, {{U}} (30) {{/U}} alone to ask what lay beneath the surface. The flint time that the question "What is at the bottom of the oceans " had to be answered with any commercial {{U}} (31) {{/U}} was when the {{U}} (32) {{/U}} of a telegraph cable from Europe to America was proposed. The engineers had to know the depth profile of the {{U}} (33) {{/U}} to estimate the length of cable t A. against B. with C. for D. onto [单选题] 作业人员应具备必要的安全生产知识,学会紧急救护法,特别要学会( )。 (1.0分)
A. 创伤急救 B. 溺水急救 C. 触电急救 D. 高空急救 [多选题]使用人力制动机防溜的要求()。
A.电气化铁路区段在接触网带电的线路上停留的车辆,如不能使用人力制动机时,应使用人力制动机紧固器(使用的条件和办法比照人力制动机防溜的规定办理)。 B.人力制动机故障的车辆或车组不能按规定采取防溜措施时,须与人力制动机作用良好的车辆连挂在一起,禁止单独停留 C.遇最外方人力制动机故障,按单防溜执行时(中间车组除外),不得顺延 D.按中间车组及双防溜执行时,可顺延使用下一车辆人力制动机 [判断题]BOM票箱更换由客运值班员完成。
A.正确 B.错误 [单选题].设在地下一层且室内地面与室外出入口地坪高差大于10.米的歌舞娱乐放映游艺场所应设()楼梯间。
A.开敞 B.敞开 C.封闭 D.防烟 [单选题] 在直流总输出回路及各直流分路输出回路装设直流熔断器或小空气开关时,上下级配合()。
A.无特许要求,只要能切除故障即可 B.无选择性要求 C.有选择性要求 D.视具体情况而定 [单选题]地震发生后,( )小时为救援黄金期。
A. 12 B. 24 C. 48 D. 72 [单选题]( )869.允许速度Vmax≤120km/h正线,轨道动态质量容许偏差管理值,高低1.(波长1.5-42m)Ⅱ级偏差管理值为1.()mm
A.18 B.8 C.20 D.12 [多项选择]集团公司董事长、党委书记王明胜在《适应新常态、落实总基调》署名文章中指出,职工培训实效性不强,主要体现在()三个方面。
A. 培训方式较为单一 B. 培训课程较陈旧 C. 职工培训中的形式主义较为突出 D. 培训内容缺乏针对性 [单选题]甲住A省,到B省旅游时,目击一起刑事案件,之后返回A省。案发地公安机关对甲进行询问。下列做法不符合《刑事诉讼法》规定的是( )。
A.传唤甲到案发地的公安机关提供证人证言 B.通知甲到其所在地的公安局提供证人证言 C.到甲的单位询问甲 D.到甲的住处询问甲 我来回答: 提交
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