多项选择题

下列电源中，可作为应急电源的是( )。

A.UPS
B.EPS
C.独立于正常电源的发电机组
D.变电所同段母线上引出专用回路

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根据材料请回答 51～65TelevisionTelevision is the greatest communication medium ever designed and operated by man.It sends into the human brain an 51 amount of opinions and information and 52 moral and artistic standards for all of us.Every minute of a television program teaches us some-thing.It is never a neutral influencE.For example, how and when public issues are 53 depends in large part 54 how they are treated by the television networks in entertainment 55 news and public affair programs.What the American people think about government and politics in general, as well as a favorite candidate in 56 , is largely influenced by television.Unfortunately commercial television seldom 57 anything of value to our lives.Many Americans express a deep hostility 58 television because they know most TV programs are 59 poor quality and that sometimes these programs are even 60 .The question is: how can television be improved? There are many things the ordinary 61 can do.For example, he can complain to his local TV stations to improve their pro-grams.He can 62 citizens' groups to urge local TV stations to improve their programs.63 , these groups should propose regular analyses of specific TV commercials and pro-grams by educators, doctors, etc, to 64 the influence of these programs on children and adults.Television can be our most exciting medium if we just think about 65 to improve it.第 51 题A.endlessB.endingC.endedD.end

A.It
B.Every
C.It
D.For
E.
What
F.
Unfortunately
G.Many
H.
The
I.For
J.He
K.63
L.Television
M.endless
B.ending
C.ended
D.end

多项选择题

下列选项中的( )，电力负荷应为一级负荷。

A.中断供电将造成人身伤亡时
B.中断供电将在经济上造成重大损失时
C.中断供电将影响重要用电单位的正常工作时
D.中断供电将造成大型影剧院等较多人员集中的重要的公共场所秩序混乱时

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