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问题 单项选择题

下列对设备磨损的叙述中，不正确的是( )。

A．设备购人未使用情况下不会发生磨损

B．设备在使用过程中，在外力的作用下发生的磨损，称为第一种有形磨损

C．第二种无形磨损是由于科学技术的进步，使原有设备经济效益相对降低而发生贬值

D．设备的综合磨损是指同时存在有形磨损和无形磨损的损坏和贬值的综合情况

答案

参考答案：A

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短文填词

Kitty was the name Anne gave to her diary.

During________Second World War Anne was

among the Jewish who were forced to________(躲藏)

away from their homes.I was deeply________(感动)

when I read about her feelings in her diary.

________a girl she was!Even though she might

lose her life at any time, she would never l________

heart.She wanted very much to go back to nature,

l________at a deep blue sky and listening to the

songs of the birds.But things were d________.In

order not to be________(捕获) by the German

Nazi, she and her family stayed in an attic (阁楼)

w________the windows shut all day.Nature

seemed a distant dream to Anne.That________

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图3是一台主机上用sniffer捕捉的数据包，请根据显示的信息回答下列问题。

(1)IP报文的源地址是 (16) ，目标地址是 (17) 。

(2)携带的协议是 (18) 。

(3)从图中的信息可知，该数据包所携带的数据部分的大小为 (19) 。

(4)该IP数据包在传输过程中是否允许分片(回答是或者否) (20) 。

20（）
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