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【多选题】
Study the following four definitions and decide which are formal definitions.A.
Anthropology may be defined as a branch of both science and sociology in which people, society and culture are studied.
B.
Physics is a branch of science in which forces such as heat, light, sound, pressure, gravity and electricity, and the way that they affect objects, are studied.
C.
The scientific study of language, especially language form, language meaning, and language in context can be defined as linguistics.
D.
Education is the process of facilitating learning , or the acquisition of knowledge, skills, values, beliefs, and habits .
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举一反三
【简答题】a=set() a.add('py') a.update('th') print(a)
【单选题】下列说法错误的有( )。
A.
波节处声压最小,转换成电信号电压最小
B.
隔项逐差法处理数据,能够减小了测量的随机误差
C.
空程一般是指螺纹在逆转时因螺距间隙而造成的空转现象
D.
压电陶瓷换能器在声电转化过程中信号频率保持不变
【单选题】下列除哪一项外,都是膝关节的结构特点?( )
A.
关节囊内有前、后交叉韧带和半月板
B.
关节囊外的内外侧分别有胫侧和腓侧副韧带加强
C.
关节前面有髌骨和髌韧带
D.
可绕冠状轴和垂直轴运动
【单选题】下列除哪一项外,都是膝关节的结构特点
A.
关节囊内有前、后交叉韧带和半月板
B.
可绕额状轴和垂直轴运动
C.
关节前面有髌骨和髌韧带
D.
关节囊外的内外侧分别有胫侧和腓侧副韧带加强
【单选题】听力原文： Dozens of recording stars began converging on a Hollywood studio Monday to add their voices to a song they hope will raise millions of dollars for Haitian earthquake relief25. The words and musi...
A.
To raise money for African humanitarian efforts.
B.
To raise money for Haitian earthquake victims.
C.
To sing in memory of Michael Jackson.
D.
To make a recording of the original version of the song.
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