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When Abraham Lincoln was just a boy, he had to help his father to look after their farm. It was hard work and there wasn ’ t anything interesting for him. Abraham wanted to go to school, but there was no school there. He was sad most of the time. Mrs. Linco l n loved the boy very much. She tried her best to make Abraham happy. One morning she got up early and went to the town. It was a long way , so it took her a long time to get there. She bought something there and went back. It was late in the evening when she got home. The next morning Mrs. Lincoln said to Abraham, “ Today is your birthday, so we ’ re going to have a party. ” She put some food on the table, and then brought out a present. “ A book! ” Abraham cried. It was an old book, but he liked it. A smile came on his face. He looked up at Mrs. Lincoln and said, “ Thank you, Mom. ”
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举一反三
【多选题】性格差异影响学生的哪些方面?
A.
学习方式
B.
学习的速度和质量
C.
社会性学习
D.
个体社会化
【单选题】出现导轨研伤故障现象可能的原因是()。
A.
液压缸压力和行程不够
B.
夹紧液压阀卡住没有动作
C.
导轨润滑不良
D.
夹持力量不足
【多选题】导轨研伤的故障原因有 。
A.
地基与床身水平度有变化
B.
导轨润滑不良
C.
导轨材质不佳
D.
导轨里落入赃物
E.
载荷过分集中或刮研质量差
【单选题】对湿、热不稳定且可压性差的药物,采用( )
A.
结晶压片法
B.
干法制粒压片
C.
粉末直接压片
D.
湿法制粒压片
【判断题】船上打桩定额按两艘船只拼搭、捆绑考虑。
A.
正确
B.
错误
【判断题】职业的本质就是为人民服务,为社会、为国家作贡献。
A.
正确
B.
错误
【单选题】绿颜色蔬菜在后熟过程中颜色发生的变化是( )。
A.
绿色衰退,褐色增强
B.
绿色衰退,黄色增强
C.
绿色衰退,紫色增强。
D.
绿色衰退,蓝色增强
【判断题】熔模铸造时,由于铸型的分型面均为平面,起模简便,故可生产出形状复杂的铸件。
A.
正确
B.
错误
【多选题】当发现数控镗床各坐标轴无法移动时,产生此故障的机械方面原因主要有()。
A.
滚珠丝杠联轴器松动
B.
导轨压板研伤
C.
移动部件的镶条间隙未凋好
D.
导轨面拉毛、研伤
E.
移动部件润滑不良
F.
滚珠丝杠咬死
【判断题】熔模铸造时,由于铸型的分型面均为平面,起模简便,故可生产出形状复杂的铸件。
A.
正确
B.
错误
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