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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】根据《智慧家庭场景化培训教材之装维基础》描述，IP地址为202.10.127.68，C类，网络地址202.10.127.0，主机地址为（）
A.
0.0.68.0
B.
202.0.68.0
C.
202.0.0.68
D.
0.0.0.68
【单选题】Animal studies are under way, human trial protocols are taking shape and drug makers are on alert. All the international health community needs now is a human vaccine for the bird flu pandemic sweepin...
A.
it has strong side effect to the elderly.
B.
it may turn ineffective in a short period.
C.
it is useless in preventing the virus.
D.
it hasn’t been tested in humans.