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【单选题】
文克勒地基模型是属于( )A.
半无限地基模型
B.
半塑性地基模型
C.
线弹性地基模型
D.
刚性地基模型
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皮皮学刷刷变学霸
举一反三
【单选题】在电阻、电感串联正弦交流电路中,功率因数 cosΦ=( )
A.
R/X L
B.
X L /R
C.
R/ √ R 2 +X L 2
D.
X L / √ R 2 +X L 2
【多选题】Both bridges are switches are being used throughout the Ezonexam LAN. Which of the following statements are true regarding bridges and switches in this network? (Choose 3)
A.
Switches are primarily software based while bridges are hardware based.
B.
Switches usually have a higher number of ports than most bridges.
C.
Bridges are frequently faster than switches.
D.
Bridges define broadcast domains while switches define collision domains.
E.
Both bridges and switches forward Layer 2 broadcasts.
F.
Both bridges and switches make forwarding decisions based on Layer 2 addresses.
【单选题】有程序段Dim a%(10),k%: For k=1 to 10 : a(k)=sqr(k) : Next k : Print a(k), 程序运行结果为( )。
A.
0
B.
1
C.
3
D.
程序出错
【简答题】有如下程序段 Dim a(4) As Integer,b(4) As Integer For k=0 to 2 a(k+1)=k*2 b(3-k)=a(k-1) Next k Print b(k) 执行程序段的结果是 。
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