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【单选题】
Which of the following is true?A.
The American economic system is organized around a basically public-owned enterprise.
B.
In a private-enterprise economy, individuals are allowed to own productive resources.
C.
In the America economy, private property only contains the ownership of productive resources.
D.
None.
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【单选题】The Great Western Development ___ a bridge between China and the rest world, promoting the common economic development and prosperity of China and the world at large.
A.
is led to
B.
is determined to be
C.
is bound to be
D.
is to build
【简答题】RS-232串行接口标准规定了数据终端和数据通信设备之间信息交换的方式和功能,使用( )连接器。
【简答题】RLC 串联谐振又叫 谐振, RLC 并联谐振又叫 谐振, 电路呈 性。
【单选题】It is an imaginary line ______ the eastern and western halves of the world and is very useful for navigation. [ ]
A.
to divide
B.
divided into
C.
divides
D.
dividing
【单选题】RS-232串行接口标准规定了数据终端和数据通信设备之间信息交换的方式和功能,使用( )连接器。
A.
2针或9针
B.
9针或22针
C.
9针或25针
D.
22或25针
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