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- <填空题> There are more than forty universities in Britain—nearly twice as many as in 1960During the 1 960s eight completely new ones were founded, and ten other new ones were created l __ converting old colleges of technology into universitiesIn the same period the 2 ___ of students more than doubled, from 70, 000 to more than 200, 000By 1973 about 10%of men aged from eighteen to twenty—one were in universities and about 5%of womenAll the universities are private institutions Each has its 3___ governing councils4___ some local businessmen and local politicians as well as a few academics(大学教师)The state began to give grants to them fifty years 5__, and by 1 970 each university derived nearly all its 6__ from state grantsStudents have to pay fees and living costs, but every student may receive from the local authority of the place 7_he lives a personal grant which is enough to pay his full costs, including lodging and food unless his parents are richMost students take jobs in the summer for about six weeks, but they do not normally do outside work during the academic year The Department of Education takes 8 _ for the payments which cover the whole expenditure of the universities, but it does not exercise direct control It can have an important influence 9_ new developments through its power to distribute funds, but it takes the advice of the University Grants Committee, a body which is mainly 10_ of academics1．A．with B．by C．at D．into2．A．amount B．quantity C．lot D．number3．A．self B．kind C．own D．personal4．A．making B．consisting C．including D．taking5．A．ago B．before C．after D．ever6．A．suggestions B．grades C．profits D．funds7．A．what B．which C．where D．how8．A．responsibility B．advice C．duty D．pleasure9．A．at B．to C．on D．form10．A．consisted B．composed C．made D．taken
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- <判断题>法拉第电磁感应定律的表达式为:,其中的负号是楞次定律的数学表示。( )
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- <判断题>磁场对电流的作用力(即安培力)的计算用比奥─萨伐尔定律,电流激发的磁场中某点的磁感应强度计算用安培定律。( )
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- <判断题>安培定律微分表达式为,该定律就是发电机的原理。( )
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- <判断题>感生电动势是外磁场不变由磁场中导体运动而产生的感应电动势。( )
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- <判断题>线圈自感电动势计算式为,其中称为线圈的自感系数,该系数由线圈的形状、大小、匝数、磁介质决定。( )
解析
- <判断题>任一物理量随时间的变化关系如果满足微分方程,其中是由系统固有属性决定的常量,则物理量作简谐振动,简称谐振动。( )
解析
- <判断题>两个振动方向相同、振动频率相同的谐振动叠加,其合振动仍然是谐振动,当它们的初相位相同时,其合振幅达到最大。( )
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- <判断题>描述简谐振动的物理量有:振幅、振动频率、振荡周期。( )
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- <判断题>弹簧振子是一个理想化的谐振动模型,其振动的动力学方程是,振动方程是,其中,称为固有圆频率。( )
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- <判断题>描述平面简谐波的物理量有振幅、周期、波速、波长、频率。( )
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- <判断题>描述平面简谐波的物理量中由振动波源决定的物理量是频率和波长。( )
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- <判断题>机械波分为纵波和横波,其中声波属于横波。( )
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- <判断题>两列光要成为相干光,必须满足的条件是:光强相同、振动方向相同、相位差恒定。( )
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- <判断题>两列波构成相干波的条件是:振动振幅相同、振动频率相同、相位差恒定。( )
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