| Today, most countries in the world have
canals. Many countries have built canals near the coast, and parallel{{U}}
(67) {{/U}}the coast. Even in the twentieth century, goods can be
moved more cheaply by boat than by any other{{U}} (68) {{/U}}of
transport. These{{U}} (69) {{/U}}make it possible for boats to travel{{U}}
(70) {{/U}}ports along the coast without being{{U}} (71)
{{/U}}to the dangers of the open. Some canals, such as the Suez and the
Panama, save ships weeks of time by making their{{U}} (72) {{/U}}a
thousand miles shorter. Other canals permit boats to reach cities that are
not{{U}} (73) {{/U}}on the coast; still other canals{{U}} (74)
{{/U}}lands where there is too much water, help to{{U}} (75)
{{/U}}fields where there is not enough water, and{{U}} (76)
{{/U}}water power for factories and mills. The size of a canal{ A. off B. with C. to D. by [多选题]直线松锚升空操作，应符合规定，正确的是（ ）。（DL/T 5343—2018《110kV～750kV架空输电线路张力架线施工工艺导则》6.1.9）
A.A.松锚前应先压接相邻两紧线段的接续管 B.B.地面的放线临锚附近应安装卡线器，并应接入牵引滑车或其他牵引工具作为松锚工具；还应收紧松锚工具至放线临锚钢丝绳不再受力时，方可拆除待紧线段及已紧线段的放线临锚 C.C.放松松锚工具后，应用压线装置控制导地线高度，待松锚工具完全不受力后方可将其拆除 D.D.同一相（极）的各子导线应对称松锚，并应使放线滑车保持平衡 [多选题]手工钨极氩弧焊的焊接参数有( )。
A. 钨极直径 B. 焊接电流 C. 电弧电压 D. 焊接速度 E. 氩气流量 F. 焊条直径 [简答题]【34053】对导线、钢绞线进行补修的标准是如何规定的？
[多选题]政府工作报告中指出,当前和今后一个时期,我国发展面临风险挑战前所未有,但我们有( )、( )、( ),( )。 ·
A.独特政治和制度优势 B.雄厚经济基础 C.巨大市场潜力 D.亿万人民勤劳智慧 [多选题]构建一体化的国家战略体系和能力，就要把国防和军队建设有机融入经济社会发展大体系，逐步实现国家各领域（）。
A.战略布局一体融合 B.战略资源一体整合 C.战略力量一体运用 D.战略目标一体套用 [单选题]时序逻辑电路的置数端有效,则电路为( )状态。
A.计数 B.并行置数 C.置1 D.清0 [单项选择]A: My apartment is only 10 minutes' walk from the office. Why don't you drop by some time B:______
[单选题]朝鲜战争是哪一年爆发的?( )
A.1950年 B.1962年 C.1969年 [填空题]目前用得较多的两种高效率磨削工艺是_______( )_____________和________( )___________.
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