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【单选题】
若矩阵 A= 72 69 67 65 62 59 81 74 68 64 59 52 85 79 76 72 69 64 228 219 211 204 195 183 是表示我校2011届学生高二上学期的期中成绩矩阵，A中元素a ij （i=1，2，3，4；j=1，2，3，4，5，6）的含义如下：i=1表示语文成绩，i=2表示数学成绩，i=3表示英语成绩，i=4表示语数外三门总分成绩j=k，k∈N * 表示第50k名分数．若经过一定量的努力，各科能前进的名次是一样的．现小明的各科排名均在250左右，他想尽量提高三门总分分数，那么他应把努力方向主要放在哪一门学科上（ ）A.
语文
B.
数学
C.
外语
D.
都一样
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【简答题】实际应用中,10KV系统中变压器联接组别最常用的有D.yn11与Y.yno两种方式。（）
【单选题】When a group of children who have been watching television programs that include acts of violence is sent to play with a group of children who have been watching programs that do not include acts of v...
A.
Television has a harmful effect on society.
B.
Parents are responsible for the acts of their children.
C.
Violent actions and passive observation of violent actions are not related.
D.
There are no other differences between the two groups of children that might account for the difference in violent behavior.
E.
Children who are treated violently will respond with violence.
【单选题】Many critics believe that.
A.
television programs would not exist without commercials
B.
commercial television programming is immoral
C.
commercials wouldn't exist without television
D.
television programming exists for the sake of advertising
【单选题】Some television programs have to be fundamentally changed on account of an industrial ______.
A.
row
B.
affray
C.
dispute
D.
handling
【简答题】卡尔文循环的最初产物是
【单选题】如图所示,通过绘图纸外观轮廓功能我们展示了一个帆船从右向左运动的补间动画。可以看出该补间设置了缓动值,那么以下描述正确的 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> 是( ____ )
A.
正缓动值，加速度
B.
正缓动值，减速度
C.
负缓动值，加速度
D.
负缓动值，减速度
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