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【单选题】
电子商务安全体系反映了电子商务安全涉及的内容和相关技术，由网络服务层、加密技术层、安全认证层、安全协议层、应用系统层组成。其中，入侵检测是（ ）应完成的功能之一。A.
网络服务层
B.
加密技术层
C.
安全认证层
D.
安全协议层
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【单选题】— What are your students doing now? — They football. Let's go and have a look.
A.
are playing
B.
will play
C.
is playing
D.
were playing
【简答题】阅读理解。 Kate and Peter like sports. In summer they swim and in winter they ski (滑雪). They are planning (计划) a ski trip for this weekend, but they don't know what the weather will be like. It's 7:30 now,...
【简答题】A．To show the key role played by air traffic controllers. B．To show the great responsibility shouldered by the pilots. C．To give an example of air disasters. D．To show that air travel is far safer tha...
【简答题】"Congratulations, Mr. Cooper. It's a girl." Fatherhood is going to have a different meaning and ( 1 ) _____ a different response from every man who hears these words. Some feel ( 2 ) _____ when they r...
【单选题】What will the club members do with the litter?
A.
They will place it in boxes.
B.
They will place it in aluminium cans.
C.
They will place it into trash bags.
D.
They will place it into garbage cans.
【简答题】succeed advanced common reflect reason smart deadline besides nearly intelt 1. George is a very boy; he is one of the best students in his class. 2. You have to work hard if you want to ...
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