| 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. down B. beneath C. below D. off [单选题] 下列叙述的情况中，（ ）的情况可被认为是动脉出血。
A. 血液为暗红色，不断涌出 B. 血液为鲜红色，喷出 C. 血液为鲜红色，渗出 D. 血液为暗红色，渗出 [判断题]防烟分区的挡烟垂壁,其装修材料应采用对级装修材料。
A.正确 B.错误 [单选题]脑血管疾病三级预防中最关键的是( )
A.发病前预防 B.早期诊断 C.早期治疗 D.防治并发症 E.预防复发，提高生活质量 [单选题] 能耗分析是属于 BIM 技术在()阶段中的应用。
A.概念设计 B.方案设计 C.初步设计 D.施工图设计 [单项选择]少数急性有机磷中毒患者发生中间综合征，其出现时间为
A. 2～6h B. 8～12h C. 1～4d D. 2～3周 E. 数日至1周后 [单选题] 大革命失败以后,中国革命所以能够坚持下来并走向复兴,关键在于找到了一条正确的革命道路,这就是( )武装夺取政权的道路。
A. 以城市为中心 B. 农村包围城市 C. 先城市后农村 D. 以农村为中心 我来回答: 提交
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