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【简答题】
The National Endowment for the Arts recently released the the results of its “Reading at Risk” survey, which described movement of the American public away from books and literature and toward television and electronic media. According to the survey. “reading is on the decline on every    62.__________ region, within every ethnic group, and at every educational level.“ The day the NEA report released, the U.S. House, in a tie      63.___________ vote, upheld the government's right to obtain bookstore and library records under a provision of the USA Patriot Act. The House proposal would have barred the federal government from demand library records, reading lists, book customer      64.___________ lists and other material in terrorism and intelligence investigations. These two events are completely unrelated to, yet they      65.___________ echo each other in the message they send about the place of books and reading in American culture. At the heart of the NEA survey is the belief in our democratic         66.__________ system depends on leaders who can think critically, analyze texts and writing clearly. All of these are skills promoted by     67.__________ reading and discussing books and literature. At the same time, through a provision of the Patriot Act, the leaders of our country are unconsciously sending the message that reading may be connected to desirable activities that might        68._________ undermine our system of government rather than helping democracy flourish. Our culture's decline in reading begin well before the       69._________ existence of the Patriot Act. During the 1980s' culture wars, school systems across the country pulled some books from library shelves because its content was deemed by parents     70.__________ and teachers to be inappropriate. Now what started in schools across the country is playing itself out on a nation stage and    71.________ is possibly having an impact on the reading habits of the American public. 在70处填写改错内容。
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【单选题】幼儿比起“交通工具”更容易理解“汽车”的概念,因为其思维具有以下哪一特点( )
A.
表面性
B.
自我中心性
C.
绝对性
D.
具体形象性
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A.
197
B.
195.26
C.
221
D.
223
【单选题】社会主义改革的根本目的在于( ) A.改变社会主义制度 B.完善社会主义制度 C.解放和发展生产力 D.实现社会公平
A.
1
B.
2
C.
3
D.
4
【简答题】数字信号代表性的波形为__________。
【单选题】在数字基带信号波形中,用相邻码元的电平的跳变和不变表示消息代码,而与码元本身的电位或极性无关的波形为( )。
A.
单极性波形
B.
双极性波形
C.
差分波形
D.
多电平波形
【单选题】You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting?()
A.
The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.
B.
The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.
C.
The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.
D.
The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.
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A.
底舱高度
B.
二层舱内货物的堆装高度
C.
二层舱的高度
D.
船舶设计时使用的舱容系数。
【单选题】XYZ corporation produced 300 units of output but sold only 275 of the units it produced. The average cost of production for each unit of output produced was $100.Each of the 275 units sold was sold fo...
A.
-$3,875
B.
$26,125
C.
$28,500
D.
$30,000
【单选题】XYZ corporation produced 300 units of output but sold only 275 of the units it produced. The average cost of production for each unit of output produced was $100. Each of the 275 units sold was sold f...
A.
-$3,875.
B.
$26,125.
C.
$28,500.
D.
$30,000.
【简答题】假设原来的数字信号的二进制代码为 110101 ,请分别画出它所对应的单极性归零码和差分曼彻斯的波形。 注:差分曼城斯特编码规则: ( 1 )第一个码元如果为“ 1 ”,则用正负跳变的波形表示,用相反的波形表示“ 0 ”; ( 2 )后面的码元,如果是“ 0 ”,则与前面码元波形相同,“ 1 ”则与前面的波形相反。
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