下图中L为北半球某一纬线，K为晨昏线，晨线与昏线分别交L于M、N。读图完成下列各题。

小题1:若MN经度差为120°，此时，晨线交赤道于Q点。当Q点日落时，M的地方时为( )

A．17：OO

B．18：00

C．20：OO

D．21：00小题2:若纬线MN的经度差减小，则( )

A．L纬线的纬度减小

B．海口地面物体正午日影渐长

C．北京日出更偏东北

D．K线最高纬度昼夜长短不变小题3:若L位于中纬地区，L、K所包围的面积(阴影部分)达到最大时( )

A．南亚进入“于热季节”

B．福建进入台风多发季节

C．北京正值“香山红叶”

D．澳大利亚西北草原葱绿

The Simple Network Management Protocol (SNMP)is an (66) protocol that facilitates the exchange of management information between (67) . It is part of the Transmission Control Protocol/Internet Protocol(TCP/IP) protocol suite. SNMP enables network (68) to manage network performance, find and sole network problems, and plan for (69) An SNMP -managed network consists of three key components: managed devices , (70) ,and network -management systems .

A. servers B. administrators C. computersD. routers