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【单选题】
ISO提出OSI模型是为了( )
A.
建立所有网络结构都必须遵从的绝对标准
B.
克服多厂商网络固有的通信问题
C.
证明没有分层的网络结构是不可行的
D.
上列陈述都不是
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参考答案:
举一反三
【单选题】多个网络段上的用户报告他们无法从服务器检索电子邮件。以下哪个命令将允许服务器技术人员确保电子邮件服务在服务器上运行?
A.
ifconfig
B.
ipconfig
C.
nbtstat
D.
netstat
【多选题】误差为分()
A.
系统误差
B.
测量误差
C.
随机误差
D.
粗大误差
【单选题】People often like clothes can make them comfortable.
A.
when
B.
who
C.
that
D.
where
【判断题】职业性有害因素是职业性多发病唯一的直接原因。
A.
正确
B.
错误
【单选题】When the companies make decisions, ______.
A.
they often ignore the well-being of the people involved
B.
they may consider the benefits of the employees who had contributed a lot to the companies
C.
they need not be responsible for the dismissed employees
D.
they don't want to be considered as ethical
【单选题】People often do not make decisions by using the basic economic principle of rationally weighing all possibilities and then the choice that can be expected to maximize benefits and minimize harm...
A.
People tend to act on new information, independent of its perceived relative merit, rather than on information they already have.
B.
People prefer a major risk taken voluntarily to a minor one that has been forced on them, even if they know that the voluntarily taken risk is statistically more erous.
C.
People tend to take up potentially damaging habits even though they have clear evidence that their own peers as well as experts disapprove of such behavior.
D.
People avoid situations in which they could become involved in accidents involving large numbers of people more than they do situations where single-victim accidents are possible, even though they realize that an accident is more likely in the latter situations than in the former.
E.
People usually give more weight to a physician's opinion about the best treatment for a disease than they do to the opinion of a neighbor if they realize that the neighbor is not an expert in disease treatment.
【单选题】Q222多个网络段上的用户报告他们无法从服务器检索电子邮件。以下哪个命令将允许服务器技术人员确保电子邮件服务在服务器上运行?
A.
ifconfig
B.
ipconfig
C.
nbtstat
D.
netstat
【单选题】发那科工业机器人现场控制装置是什么
A.
PLC
B.
控制器
C.
相机
D.
工业机器人本体
【判断题】测量误差分为随机误差、系统误差、粗大误差三类。
A.
正确
B.
错误
【多选题】测量误差分为()、()、()。
A.
系统误差
B.
随机误差
C.
粗大误差
D.
允许误差 F.引用误差 G.相对误差
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