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【单选题】
在C语言中,执行语句:for (i=1,s=0; i<4; i++)s+=i;后,变量s的值是( )。A.
0
B.
3
C.
6
D.
不定
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【单选题】WHAT IS TRUE CONCERNING PHYSICAL AND LOGICAL TOPOLOGIES?
A.
Logical topologies refer to how a network transfers data between devices.
B.
Physical topologies display the IP addressing scheme of each network.
C.
The logical topology is always the same as the physical topology.
D.
Physical topologies are concerned with how a network transfers frames.
【简答题】A．lawful B．historical C．natural D．logical
【单选题】Give the logical variables X=Y=1, the value of X ∨ Y(logical addition) is( ).
A.
1
B.
2
C.
10
D.
0
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