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【单选题】
信号可以双向传输,但不能同时进行双向传送,只能交替进行。在任何时刻,通道中只有在某一方向传输的信号,这种通信方式叫做( )。
A.
通信
B.
半通信
C.
通信
D.
同步通信
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举一反三
【单选题】There are several advantages in making computers as small as one can. Sometimes weight is particularly important. A modern aircraft, for example, carries quite a load of electronic apparatus. If it is...
A.
The increase of operation speed.
B.
The decrease of power needed.
C.
The development integrated circuits.
D.
Their reliability.
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【单选题】以下哪一项不是合成ABS塑料的材料?()
A.
丙烯腊
B.
丁二烯
C.
苯乙烯
D.
聚丙烯
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【单选题】以下哪一项不是合理的灭火原理?()
A.
窒息灭火
B.
冷却灭火
C.
就近灭火
D.
疏散隔离法
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【单选题】One use of networks is to let several computers share ______ such as file systems, printers, and tape drives.
A.
CPU
B.
memory
C.
resources
D.
data
查看完整题目与答案
【单选题】●One use of networks is to let several computers share (71) such as file systems，printers，and tape drives. (71)
A.
CPU
B.
memory
C.
resources
D.
data
查看完整题目与答案
【单选题】_________ is said that most teenagers have problems such as Li Ming’s.
A.
That
B.
This
C.
It
D.
She
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【单选题】●One use of networks is to let several computers share (75) such as file systems，printers，and tape drives. (75)
A.
CPU
B.
memory
C.
resources
D.
information
查看完整题目与答案
【多选题】The movements of the flight control surfaces are managed by several computers. These are:
A.
Aileron Computers (ELAC),
B.
Spoiler and Elevator Computers (SEC),
C.
Flight Augmentation Computers (FAC).
D.
Fight Management Guidance Computers (FMGCs)
查看完整题目与答案
【单选题】以下哪一项不是合同终止的原因（ ）。
A.
债务人依法将标的物提存
B.
经双方协议解除
C.
合同抵押物灭失
D.
债权人免除债务
查看完整题目与答案
【单选题】It can be inferred from the passage that ______.
A.
computers were very small several decades ago
B.
babies can do some tasks with the help of computers
C.
more new types of computers will be designed in the future
D.
future computers will make babies grow faster and more easily
查看完整题目与答案
相关题目：
【单选题】There are several advantages in making computers as small as one can. Sometimes weight is particularly important. A modern aircraft, for example, carries quite a load of electronic apparatus. If it is...
A.
The increase of operation speed.
B.
The decrease of power needed.
C.
The development integrated circuits.
D.
Their reliability.
查看完整题目与答案
【单选题】以下哪一项不是合成ABS塑料的材料?()
A.
丙烯腊
B.
丁二烯
C.
苯乙烯
D.
聚丙烯
查看完整题目与答案
【单选题】以下哪一项不是合理的灭火原理?()
A.
窒息灭火
B.
冷却灭火
C.
就近灭火
D.
疏散隔离法
查看完整题目与答案
【单选题】One use of networks is to let several computers share ______ such as file systems, printers, and tape drives.
A.
CPU
B.
memory
C.
resources
D.
data
查看完整题目与答案
【单选题】●One use of networks is to let several computers share (71) such as file systems，printers，and tape drives. (71)
A.
CPU
B.
memory
C.
resources
D.
data
查看完整题目与答案
【单选题】_________ is said that most teenagers have problems such as Li Ming’s.
A.
That
B.
This
C.
It
D.
She
查看完整题目与答案
【单选题】●One use of networks is to let several computers share (75) such as file systems，printers，and tape drives. (75)
A.
CPU
B.
memory
C.
resources
D.
information
查看完整题目与答案
【多选题】The movements of the flight control surfaces are managed by several computers. These are:
A.
Aileron Computers (ELAC),
B.
Spoiler and Elevator Computers (SEC),
C.
Flight Augmentation Computers (FAC).
D.
Fight Management Guidance Computers (FMGCs)
查看完整题目与答案
【单选题】以下哪一项不是合同终止的原因（ ）。
A.
债务人依法将标的物提存
B.
经双方协议解除
C.
合同抵押物灭失
D.
债权人免除债务
查看完整题目与答案
【单选题】It can be inferred from the passage that ______.
A.
computers were very small several decades ago
B.
babies can do some tasks with the help of computers
C.
more new types of computers will be designed in the future
D.
future computers will make babies grow faster and more easily
查看完整题目与答案