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【单选题】
十进制数25转化为二进制数为（ ）A.
B.
C.
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反馈参考答案：
举一反三
【单选题】研究发现两种现象: 1 动物体内的 B 细胞受到抗原刺激后,在物质甲的作用下,可增殖、分化为效应 B( 浆 ) 细胞; 2 给动物注射从某种细菌获得的物质乙后,此动物对这种细菌具有了免疫能力。则这两种物质 ( )
A.
甲是抗体，乙是抗原
B.
甲是抗体，乙是淋巴因子
C.
甲是淋巴因子，乙是抗原
D.
甲是淋巴因子，乙是抗体
【单选题】The Internet’s network layer has three major components, the first component is the IP protocol, the second component is the routing protocol, the final component is ( )?
A.
forwarding
B.
address translation
C.
check
D.
ICMP
【单选题】●Which is the second layer from the bottom in Open System Interconnection Reference Model? (71)． (71)
A.
Application
B.
Data link
C.
Network
D.
Session
【简答题】S1:Is single dunnage all right for this part?S2:I told you to lay it in two layers with the lower layer athwartship and the upper layer fore and aft.Q:What does the second speaker mean?A. The lower la...
【简答题】The second factor is that radiant heat coming into the city from the Sun is trapped in two ways: (1) by a continuing series of reflections among the numerous vertical suces that buildings present a...
【简答题】The second layer of the atmosphere is called __________.
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