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【简答题】
I like watching TV very much, for I think it has many advantages. First of all, watching TV is a good rest. After a day's hard work, we need a good rest. Watchi ng TV can make us not tired any more because of the pleasant music and TV plays. Besides, watching TV is entertaining . There are many kinds of entertainments, such as sports activities, singing and dancing concerts, plays and films all over the world at any time. It's not possible for us to go to every place to enjoy all the activities within a short time. We need over ten hours to fly from New York to Paris, a week by train from Beijing to Moscow and all hour drive from Queens District to Ma nhattan District. But within just one second, TV can bring us from an NBA game in New York to a fashion show in Paris by changing the channels. Most importantly, watching TV is educational. Our children can learn different kinds of subjects through the educational programme and the special reports on TV and it's easy for them to learn Chinese from a Chinese teacher in Beijing and to learn Russian lessons from a Russian teacher in Moscow. We can even learn how to behave ( 表现 ) well from the TV plays, meanwhile, a teacher can teach millions of students without a huge classroom. (253 words)
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举一反三
【单选题】下列光电器件是根据外光电效应做出的是()
A.
光电管
B.
光电池
C.
光敏电阻
D.
光敏二极管
【单选题】在各种类型的保险合同中,保险责任开始就不能解除合同是( )
A.
家庭财产保险
B.
机动车保险
C.
货物运输保险
D.
人身意外伤害险
【判断题】板料、模具和冲压设备是构成冲压加工的三个必备要素
A.
正确
B.
错误
【判断题】下列这16项因素中,你认为哪些和孩子的成绩有关,哪些无关。仅指成绩,不涉及情商之类的考虑。请将你认为“与成绩有关的表述”选“正确”,无关的表述选“错误”。 (1)学生的父母受过良好教育
A.
正确
B.
错误
【单选题】两端铰接、Q235钢的轴心压杆的截面如图所示,在不改变钢材品种、构件截面类别和翼缘、腹板截面面积的情况下,采用( )可提高其承载力。
A.
改变构件端部连接构造,或在弱轴方向增设侧向支承点,或减少翼缘厚度加大宽度;
B.
调整构件弱轴方向的计算长度,或减小翼缘宽度加大厚度;
C.
改变构件端部的连接构造,或沿强轴方向增设侧向支承点,或增大翼缘宽度减小厚度;
D.
调整构件弱轴方向的计算长度,或加大腹板高度减小厚度
【单选题】下列光电器件是根据外光电效应做出的是( )
A.
光电池
B.
光电管
C.
光敏电阻
D.
光敏二极管
【简答题】( ),( )和( )构成冲压的三要素。
【简答题】( )、( )和( )构成冷冲压加工的三要素。
【单选题】下列光电器件是根据外光电效应做出的是( )。
A.
光电管
B.
光电池 C 光敏电阻 D 光敏二极管
C.
光敏电阻
D.
光敏二极管
【判断题】22当预制空心板搁置在梁上时,其搁置长度不得小于80mm。
A.
正确
B.
错误
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