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【判断题】
同一用电系统中,绝对不允许同时存在保护接地与保护接零。( )A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】An administrator needs to configure a server to restrict mail traffic to an application server for security reasons. Which of the following techniques can be used to manage this？（）
A.
PAT
B.
ACLs
C.
Subnet masking
D.
Port blocking
【单选题】As an increasing number of traffic regulation schemes are devised, a ______ driver finds himself diverted and forced into one-way systems which cause even greater delays than the traffic jams they are...
A.
bewildered
B.
embarrassed
C.
hampered
D.
diverted
【单选题】一、单选题(共40题,每小题1分) 各地食品药品监管部门要全面摸排本行政区域内中小学校和幼儿园基本情况,建立( ),实现中小学校和幼儿园食品安全监管全覆盖、无死角。
A.
食物安全主体制度
B.
食物安全监督机制
C.
食品安全监管档案
【简答题】Traffic (restrict) have come into effect in Beijing in an attempt to improve the capital's air quality and traffic situation for the Olympics.
【单选题】Attempts to restrict parking in the city center have further _________ the problem of traffic congestion, and sometimes the traffic comes to a complete stop in some places.
A.
degraded
B.
aggravated
C.
amplified
D.
diffused
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