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【单选题】
If the router R1 has a packet with a destination address 192.168.1.255, what describes the operation of the network（）。A.
R1 will forward the packet out all interfaces.
B.
R1 will drop this packet because this it is not a valid IP address.
C.
As R1 forwards the frame containing this packet, Sw-A will add 192.168.1.255 to its MAC table.
D.
R1 will encapsulate the packet in a frame with a destination MAC address of FF-FF-FF-FF-FF-FF
E.
As R1 forwards the frame containing this packet, Sw-A will forward it to the device assigned the IP address of 192.168.1.255.
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【单选题】Suppose Sue and Joe agreed to collude and jointly maximize their profi ts. If Sue and Joe were to be able to repeatedly play the game shown earlier and they agreed on a penalty for defecting from thei...
A.
Both are open for many hours.
B.
Both are open for a few hours.
C.
Sue is open for many hours while Joe is open for few hours.
D.
Sue is open for few hours while Joe is open for many hours.
【简答题】材料的密实度可以评定材料的密实程度，它可以用下列（）公式来计算。 A.A. B.B. C.C. D.D.
【单选题】下列有关密实度的说法，错误的是（ ）。
A.
凡是内部有孔隙的材料，其密实度都小于1
B.
密实度的大小与其强度、耐水性和导热性等很多性质有关
C.
材料的密实度反映固体材料中固体物质的充实程度
D.
材料的表观密度与干密度越接近，材料就越密实
【单选题】To maximize value, management must:
A.
maximize short run revenue.
B.
minimize short run average profit.
C.
maximize long run profit.
D.
maximize short run profit.
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