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【单选题】
如图所示，图中为四种不同的电场分布，假定图中没有电荷。那么哪个图表示的是静电场？【图片】A.
b 和 d
B.
a 和 c
C.
b 和 c
D.
b
E.
没有
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反馈参考答案：
举一反三
【单选题】The system bus of a computer is a common channel for transmitting information among its components. It can be divided into________.
A.
Data Bus and Control Bus
B.
Address Bus and Data Bus
C.
Data Bus, Control Bus and Address Bus
D.
Address Bus and Control Bus
【单选题】● (73) manages the other components of a computer system. (73)
A.
Bus
B.
Application system
C.
Operating system
D.
Disk
【单选题】According to the type of information transmitted by the bus, the bus can be divided into .
A.
data bus and control bus
B.
address bus and data bus
C.
data bus, address bus and control bus
D.
address bus and control bus
【多选题】Physically, a bus is a set of wires.The system bus is divided into three logical function:
A.
address bus
B.
data bus
C.
control bus
D.
logical bus
【单选题】What kind of bus is usually called a communication bus in a computer system ()
A.
On-chip bus
B.
System bus
C.
Local bus
D.
External bus
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