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【单选题】
IEEE802标准中，规定了CSMA/CD访问控制方法和物理层技术规范的是（）A.
802.2
B.
802.3
C.
802.4
D.
802.5
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举一反三
【单选题】According to the author, forbidding people to take drugs is______.
A.
not an effective way to stop drug addiction
B.
unacceptable to the majority of people
C.
in the interest of the people and the governors
D.
in agreement with the basic rights of citizens
【简答题】These people intend to make their marketing more cost-effective.
【单选题】Treatments for alcoholism are more effective for younger people than older people.
A.
Y
B.
N
C.
NG
【简答题】对会计软件的全套文档资料以及会计软件程序，保管截止日期是该软件停止使用或有重大更改之后3年。（ ）
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