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【简答题】
Teenagers are at risk from temptation because what stimulates their senses often (__) to their minds.
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【判断题】实验室一旦发生起火,不要惊慌失措,应利用消防器材,采取有效措施控制、扑灭火灾。()
A.
正确
B.
错误
【单选题】When we got there we found the window of the hall open and something _________.
A.
to steal
B.
to be stolen
C.
stolen
D.
stealing
【简答题】What do we really mean by being open? Being open is a kind of invitation to others to come in, to speak and to share. It is important in letting others get to know how we think and feel. In this way w...
【单选题】( )采用一定的步骤逐步降低初始状态和目标状态的距离以达到问题解决的一种方法。
A.
手段-目的分析法
B.
逆向搜索法
C.
爬山法
D.
算法式
【简答题】回答下列关于交换技术与转发技术的问题,将解答填入答题纸对应栏内。 【问题1】(2分) 分析上图所示的网络,请回答:在多台交换机组成的网络环境中,为了保持网络的稳定性,提高网络的健壮性、稳定性,通常会采取什么措施? 【问题2】(6分) 上图所示的交换机之间的环路将可能导致哪三种网络问题的发生? 【问题3】(2分) VLAN、STP、NAT中的哪一种技术最能有效解决上图中因为环路导致的网络问题?
【单选题】The Bookstore will close for inventory on Thursday at noon we will open in the morning as usual but no books will be sold______noon.
A.
after
B.
since
C.
almost
D.
besides
【简答题】分析题图3所示回路,回答问题: (1)三种回路都能实现单缸( )顺序动作回路。(单循环 / 连续循环)。 (2)图(a)实现主换向阀3换向的核心元件是( ),图(b)实现主换向阀3换向核心元件是( ),图(c)实现主换向阀3换向核心元件是( )。 (3)还能起到延时控制的回路是( )。(填写a或b或c)
【单选题】Months ago we sailed ten thousand miles across this open sea, which ______ thePacific, and we met no storms.
A.
was called      
B.
is called          
C.
had been called    
D.
has been called
【单选题】我国产量最多的一类茶叶是( )
A.
红茶
B.
黑茶
C.
白茶
D.
绿茶
【单选题】听力原文:How much longer will you be open? (A) We open at nine o'clock. (B) No, it won't be. (C) For another hour. (11)
A.
B.
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