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听力原文: Some of the notebooks George Washington kept as a young man are still in existence. They show that he was learning Latin, was very interested in the basics of good behavior. in society, and was reading English literature. At school he seems only to have been interested in mathematics. In fact his formal education was surprisingly brief for a gentleman, and incomplete. For unlike other young Virginian gentlemen of that day, he did not go to the College of William and Mary in the Virginian capital of Williamsburg. In terms of formal training then, Washington contrasts sharply with some other early American presidents such as John Adams, Thomas Jefferson and James Madison. In later years, Washington probably regretted his lack of intellectual training. He never felt comfortable in a debate in Congress, or on any subject that had nothing to do with everyday, practical matters. And because he never learned French and could not speak directly to the French leaders, he did not visit the country he admired so much. Thus, unlike Jefferson and Adams, he never reached Europe. Washington felt uncomfortable in Congress debates because he_______.
A.
lacked practice in public speaking
B.
felt his education was inadequate
C.
disliked arguing and debating with people
D.
felt the others were impractical
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举一反三
【判断题】在RGB颜色通道中,可以为每个通道添加不同的艺术效果。
A.
正确
B.
错误
【单选题】钢筋连接和安装分项工程检验主控项目不包括()。
A.
钢筋机械 连接和焊接接头的力学性能
B.
纵向受力钢筋的连接方式
C.
受力钢筋的品种、规格
D.
纵向受力钢筋机械连接、焊接的接头面积百分
【单选题】检验批的隐蔽工程验收时,检查要点不包括( )。
A.
钢筋力学性能试验报告
B.
观感质量
C.
钢筋隐蔽工程质量验收记录
D.
产品合格证
【单选题】钢筋的力学性能 , 不包括()检测
A.
冷弯性能
B.
抗拉强度
C.
抗压强度
D.
伸长率
【单选题】如图所示,拉力F=125N,在10s内将重物匀速提升2m,滑轮组的机械效率是80%。则下列说法不正确的是
A.
绳子自由端移动距离为6m
B.
物体重是300N
C.
拉力F做的功是250J
D.
拉力F的功率为75W
【单选题】如图所示,斜面长4m,高2m,工人用400N的力沿斜面将重为600N的箱子,从底端推到顶端.下列说法中正确的是
A.
有用功为1800J,总功1200J
B.
有用功为1200J,额外功为800J
C.
总功为1600J,机械效率为75%
D.
总功为800J,机械效率为75%
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【单选题】钢筋进场后应进行检查验收,检查的内容不包括()
A.
对标牌,作外观检查
B.
取样作力学性能试验
C.
为确定可焊性,必要时,要作化学成分分析
D.
称量重量是否达到要求
【单选题】下列项目中,实施见证取样检测的项目不包括( )。
A.
钢筋保护层厚度检测
B.
水泥物理力学性能检验
C.
混凝土、砂浆强度检验
D.
沥青、沥青混合料检验
【单选题】进场预应力钢筋的质量验收,不包括( )。 A.力学性能检验 B.外观检查 C.标牌检查 D.重量检查
A.
力学性能检验
B.
外观检查
C.
标牌检查
D.
重量检查
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