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【单选题】
关于单克隆免疫球蛋白，下列哪项是错误的（）A.
是人体受抗原刺激后，由不同浆细胞产生的
B.
多见于恶性浆细胞疾病
C.
多不能检出抗体活性
D.
是一种异常的免疫球蛋白或其片段
E.
也可见于淋巴细胞恶性增生性疾病
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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】In order to stimulate the domestic economy, the government has ______ to reduce imports.
A.
pledged
B.
resorted
C.
suggested
D.
hesitated
【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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