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【简答题】
下列句子是命题吗?若是,把它改写成“如果…那么…”的形式,并判断是否正确. (1)一个角的补角比这个角的余角大多少度? (2)垂线段最短,对吗? (3)等角的补角相等. (4)两条直线相交只有一个交点. (5)同旁内角互补. (6)邻补角的角平分线互相垂直.
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【单选题】单播报文要在以太网中传送,必须包含什么信息?
A.
默认路由器的 MAC 和 IP 地址
B.
默认网关的IP地址和子网掩码
C.
与目的组对应的MAC和 IP 地址
D.
与特定目的主机对应的MAC和 IP 地址
【单选题】单播报文要在以太网中传送,必须包含( )信息。
A.
默认路由器的 MAC 和 IP 地址
B.
默认网关的 IP 地址和子网掩码
C.
交换机的 MAC 和 IP 地址
D.
目标主机的的 MAC 和 IP 地址
【单选题】Do you always get up as_______as you brother?--Not always.
A.
earliest
B.
earlier
C.
the earliest
D.
early
【单选题】单播报文要在以太网中传送,必须包含什么信息?
A.
默认路由器的MAC和IP地址
B.
默认网关的IP地址和子网掩码
C.
与目的对应的MAC和IP地址
D.
与特定目的主机对应的MAC和IP地址
【单选题】听力原文:W: Do you ever get tired of the same topics always being discussed at council meetings? M: Do I? You know sometimes I think some members have nothing better to talk about. Q: What does the man me...
A.
Members have a narrow range of topics to discuss.
B.
Members bring up the most important issue.
C.
Members have interesting topics to discuss.
D.
Members have little knowledge.
【单选题】在 WORD 编辑状态下,选择了整个表格,然后按 DELETE 键,则( )。
A.
整个表格被删除
B.
表格中一行被删除
C.
表格中一列被删除
D.
表格中的字符被删除
【单选题】---Do you often stay up? ---No. I always get a good night’s sleep _______ much work I have to do.
A.
whenever
B.
however
C.
whatever
D.
whichever
【单选题】-- My friends always get better grades than I do. What should I do? --
A.
Maybe you should be more friendly to the teachers
B.
Maybe you should have a rest.
C.
Maybe you should work harder.
D.
Maybe you should have a drink.
【单选题】在Word编辑状态下,选择了整个表格,执行了表格菜单的"删除行"命令,则( )。
A.
整个表格被删除
B.
表格中的一行被删除
C.
表格中一列被删除
D.
表格中没有被删除的内容
【单选题】—Do you get _____ red packets at Spring Festival? —Yes. And there is always _____ money in them. [     ]
A.
some; some
B.
some; any
C.
any; some
D.
any; any
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