| The effect of the baby boom on the
schools helped to make possible a shift in thinking about the role of public
education in the 1920’s. In the 1920’s, but especially in the Depression of the
1930’s, the United States experienced a {{U}} (31) {{/U}} birth rate.
Then with the prosperity {{U}} (32) {{/U}} by the Second World War
and the economic boom that followed, young people married and {{U}} (33)
{{/U}} households earlier and began to {{U}} (34) {{/U}} larger
families than had their {{U}} (35) {{/U}} during the Depression. Birth
rates rose to 102 per thousand in 1946, 106.2 in 1950, and 118 in 1955.
{{U}} (36) {{/U}} economics was probably A. refutably B. indispensably C. inevitably D. irrationally [单项选择]聚酰胺柱色谱的分离原理为( )
A. 氢键吸附原理 B. 分子筛原理 C. 分子筛和吸附原理 D. 反相分配色谱原 E. 离子交换原理 [填空题] One night in April 1912, a huge new ocean liner, the Titanic, was crossing the Atlantic. She was just about the most (36)_________ship that had ever been built. She was going very fast, which was (37)_________because there were icebergs in that (38)_________and it was very dark that night. The passengers were all having a good time when the ship suddenly (39)_________one of the icebergs.
The giant ship began to sink slowly but (40)_________. The entire ocean liner was in (41) _________. All the passengers were trying to (42)_________, but there were not enough lifeboats (43)_________on the ship since nobody thought they would be necessary. Eight white rockets were fired into the air in order to get help. Another ship, the Californian, was passing nearby. An officer and another sailor on it saw the rockets, but they thought perhaps people were having a party on board the ship and were just firing the rockets for fun. Anyway they did wake the captain. (44)_______________________
[单选题]电力通信工作票的有效期，以（）时间为限。
A.批准的检修 B.执行的检修 C.完成的检修 D.申请的检修 E.略 F.略 [单选题]行调发布的口头命令不包括（ ）。
A.临时加开或停开列车 B.列车越站、临时停站 C.改变电客车驾驶模式 D.开行工程列车 [单选题]站用交流电源相间电压三相不平衡值应小于(____)V。
A.10 B.20 C.30 D.40 [判断题]办理越出站界调车后,没有取消手续,也没有办理列车闭塞手续,就用该调车手续将列车开出属于占用区间。( )
A.正确 B.错误 [多项选择]防火涂料根据所用基料的性质，可分为（）。
A. 溶剂型防火涂料 B. 有机型防火涂料 C. 水性防火涂料 D. 无机型防火涂料 E. 有机无机复合型防火涂料 [判断题]《南昌客运段动车组乘务人员轮休管理实施办法》 中规定值乘间休席位包括乘务员室坐位和乘务员专坐。使用乘务员专坐时，间休席位为靠过道坐席。
A.正确 B.错误 [单选题]腹股沟疝数年，近几月不能还纳，且逐渐增大，无痛，饮食如常，诊断为
A.可复性疝 B.难复性疝 C.嵌顿性疝 D.绞窄性疝 E.滑疝 [单选题]甲公司是一家白酒生产商，所处地理位置接近白酒原料产地且具备优质白酒生产的成本优势和研发优势。经过市场调研，甲公司发现高端定制白酒有较好的市场需求。甲公司拟与经验丰富的产品设计顾问合作，进军高端定制白酒行业且预计能取得成功。根据上述情形，最适合甲公司选择的竞争战略是（ ）。
A.集中化战略 B.多元化战略 C.成本领先战略 D.差异化战略 我来回答: 提交
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