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【简答题】
无线电技术通过无线电波传播信号的技术。无线电技术的工作原理是导体中电流的强弱变化会产生无线电波。利用这一现象,通过调制可将信息加载于无线电波之上。当电波通过空间传播到达收信端,电波引起的电磁场变化又会在导体中产生电流。通过解调将信息从电流变化中提取出来,就达到了信息传递的目的。 根据天线的结构,无线电波既能纵向传播也能横向传播。因此,车辆通常规定使用何种接收天线?
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【单选题】The passage suggests which of the following about the workers who took temporary jobs during the 1980s?
A.
Their jobs frequently led to permanent positions within firms.
B.
They constituted a less demographically diverse group than has been suggested.
C.
They were occasionally involved in actions organized by labor unions.
D.
Their pay declined during the decade in comparison with the pay of permanent employees.
E.
They did not necessarily prefer temporary employment to permanent employment .
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【多选题】梁平法施工图注写方式有（ ）注写方式。
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平面
B.
截面
C.
列表
D.
剖面
E.
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【单选题】Which of the following statements about world growth during the last half of the 20th century is correct?
A.
In every decade, Japan has experienced faster growth than the United States.
B.
Growth rates in South American countries have exceeded those in North America.
C.
Real GDP per person in Hong Kong and Singapore are approaching or surpassing that in the United States.
D.
Due to rapid growth, real GDP per person in China is now about 50 percent of that in the United States.
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【简答题】Rock music was traditionally viewed as tough and masculine, but during which decade did female rockers become popular?
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【单选题】During which decade did the number of speakers of English as a second language exceed the number of native speakers for the first time?
A.
1920s
B.
1950s
C.
1990s
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【多选题】梁平法施工图注写方式有（ ）注写方式。
A.
截面
B.
平面
C.
立面
D.
剖面
E.
列表
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【单选题】This is a student essay about the growth in air travel. Read the first paragraph below, and choose which sentence is most suitable as a paragraph leader. ........................... IATA, the trade as...
A.
In the last decade, air travel has become much more popular than other forms of transport.
B.
At the global level, the average cost of air travel had fallen significantly.
C.
At the global level, air travel has increased dramatically in the last 10 years.
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【简答题】（ 60 ）下列关于面向对象数据库和关系数据库系统的叙述中，哪一条是不正确的？ A) 面向对象数据库设计与关系数据库设计之间一个最主要的区别是如何处理联系 B) 面向对象数据库设计与关系数据库设计中，处理继承的方法是相同的 C) 在面向对象数据库中，通过使用继承构造来获得映射 D) 在面向对象数据库中，联系是通过使用联系特性或者包括相关对象的对象标识符的参照属性来处理的
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【简答题】During the following decade, protests by colonists—known as Patriots—continued to escalate, as in the in 1773 during which Patriots destroyed a consignment of taxed tea from the Parliament-controlled-...
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【单选题】Which of the following statements about the labor movement of the 1800's is supported by the following paragraph? In this newly emerging economic order, workers sometimes organized to protect their ri...
A.
   ¨It was most successful during times of economic crisis.
B.
    ¨Its primary purpose was to benefit unskilled laborers.
C.
    ¨It was slow to improve conditions for workers.
D.
   ¨It helped workers of all skill levels form a strong bond with each other.
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相关题目：
【单选题】The passage suggests which of the following about the workers who took temporary jobs during the 1980s?
A.
Their jobs frequently led to permanent positions within firms.
B.
They constituted a less demographically diverse group than has been suggested.
C.
They were occasionally involved in actions organized by labor unions.
D.
Their pay declined during the decade in comparison with the pay of permanent employees.
E.
They did not necessarily prefer temporary employment to permanent employment .
查看完整题目与答案
【多选题】梁平法施工图注写方式有（ ）注写方式。
A.
平面
B.
截面
C.
列表
D.
剖面
E.
立面
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【单选题】Which of the following statements about world growth during the last half of the 20th century is correct?
A.
In every decade, Japan has experienced faster growth than the United States.
B.
Growth rates in South American countries have exceeded those in North America.
C.
Real GDP per person in Hong Kong and Singapore are approaching or surpassing that in the United States.
D.
Due to rapid growth, real GDP per person in China is now about 50 percent of that in the United States.
查看完整题目与答案
【简答题】Rock music was traditionally viewed as tough and masculine, but during which decade did female rockers become popular?
查看完整题目与答案
【单选题】During which decade did the number of speakers of English as a second language exceed the number of native speakers for the first time?
A.
1920s
B.
1950s
C.
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【多选题】梁平法施工图注写方式有（ ）注写方式。
A.
截面
B.
平面
C.
立面
D.
剖面
E.
列表
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【单选题】This is a student essay about the growth in air travel. Read the first paragraph below, and choose which sentence is most suitable as a paragraph leader. ........................... IATA, the trade as...
A.
In the last decade, air travel has become much more popular than other forms of transport.
B.
At the global level, the average cost of air travel had fallen significantly.
C.
At the global level, air travel has increased dramatically in the last 10 years.
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【简答题】（ 60 ）下列关于面向对象数据库和关系数据库系统的叙述中，哪一条是不正确的？ A) 面向对象数据库设计与关系数据库设计之间一个最主要的区别是如何处理联系 B) 面向对象数据库设计与关系数据库设计中，处理继承的方法是相同的 C) 在面向对象数据库中，通过使用继承构造来获得映射 D) 在面向对象数据库中，联系是通过使用联系特性或者包括相关对象的对象标识符的参照属性来处理的
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【简答题】During the following decade, protests by colonists—known as Patriots—continued to escalate, as in the in 1773 during which Patriots destroyed a consignment of taxed tea from the Parliament-controlled-...
查看完整题目与答案
【单选题】Which of the following statements about the labor movement of the 1800's is supported by the following paragraph? In this newly emerging economic order, workers sometimes organized to protect their ri...
A.
   ¨It was most successful during times of economic crisis.
B.
    ¨Its primary purpose was to benefit unskilled laborers.
C.
    ¨It was slow to improve conditions for workers.
D.
   ¨It helped workers of all skill levels form a strong bond with each other.
查看完整题目与答案