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【判断题】
contentType 属性用来设置 JSP 页面的 MIME 类型和字符编码集,取值格式 为"MIME 类型"或"MIME 类型;charset=字符编码集",response 对象调用 addHeader 方法修改该属性的值。A.
正确
B.
错误
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举一反三
【简答题】The astronauts and their achievements __________ you mentioned stimulate the youth much so that some of them are engaged in astronautics． [A]which [B] that [C] what [D] whom
【单选题】Virtual Private Networks(VPN) are networks deployed on a ( ) network infrastructure.
A.
public
B.
private
C.
local area
D.
wide area
【简答题】 (Virtual Private Network)
【判断题】We will turn off the audio system and dim the cabin light when flying at night. ()
A.
正确
B.
错误
【单选题】The light of this room was _____ dim (昏暗的) for Tom _____ read last night. [ ]
A.
too; to
B.
enough; to
C.
too; not to
D.
so; that
【单选题】Which of the following is true of a VPN (virtual private network)?
A.
A VPN communication is secure even though it is transmitted over the public Internet.
B.
One disadvantage of a VPN is that it does not encrypt messages.
C.
Remote access is difficult in case of a VPN.
D.
It is a physical, private pathway over a public or shared network from the client to the server.
【简答题】S7-200PLC中断优先级按从高到低的顺序是 、 、
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