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【判断题】
界面中第一个菜单是“文件”菜单?
A.
正确
B.
错误
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举一反三
【单选题】在轴的两端用两短V形块进行定位,限制了工件的 ( B)自由度。
A.
3个
B.
4个
C.
5个
D.
2个
【单选题】下列关于尼氏体的描述错误的是
A.
光镜线具强嗜碱性
B.
电镜下为粗面内质网和游离核糖体
C.
具有活跃的蛋白质合成功能
D.
可分布于神经元和神经胶质细胞
E.
轴突内无法观察到尼氏体
【简答题】已知三角形 ABC 的三个顶点分别是 A ( 1/2,2 ), B ( -3,4 ), C(2 , 6), 求 BC 边上的中线 AD 的长
【单选题】Which of the following areas is NOT discussed in the passage?
A.
Future careers.
B.
Nature of future work.
C.
Ethnic differences.
D.
Schools and libraries.
【简答题】There is no evidence ______ oil price will come down in the near future. A) which           B) that          C) where        D) as
【简答题】Which of the following is the guarantee of a better future for US economy? [A]Motor vehicles. [B]Housing market. [C]Business equipment. [D]Computer gear.
【简答题】There is no evidence ______ oil price will come down in the near future. A) which            B) that          C) where        D) as
【单选题】关于尼氏体,描述错误的是
A.
分布于胞体和树突内
B.
电镜下观察为微丝、微管和神经丝
C.
光镜下呈嗜碱性
D.
能合成蛋白质
【单选题】The future of developing countries__________ the hands of children, which is __________education and training for young people is important.
A.
lies in/why
B.
is put/ because
C.
is laid/ the reason
D.
depends on/why
【单选题】在轴的两端用两短V形块进行定位,限制了工件的()自由度。
A.
3个
B.
4个
C.
5个
D.
2个
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