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【多选题】
在低压配电系统中，电源有一点与地直接连接，负荷侧电气装置的外露可导电部分接至电气上与电源的接地点无关的接地极，下列哪几种系统接地形式不具有上述特点?'( )A.
TN—C系统
B.
TN—S系统
C.
TT系统
D.
IT系统
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举一反三
【单选题】AWeb site is often more effective as a(n)______tool than a selling tool．
A.
society
B.
marketing
C.
employ
D.
【单选题】The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals,【31】this is largely because,【32】animals, we stand upright. This means that our noses are...
A.
although
B.
as
C.
but
D.
while
【单选题】—People often don't appreciate what they have, do they? —No, _____ they lose it.
A.
if
B.
after
C.
when
D.
until
【单选题】The phrase “flagged up” (Para. 2) is the closest inmeaning to
A.
found
B.
marked
C.
revised
D.
stored
【简答题】How dou you balance your academic and social activities?
【多选题】确立社会主义的根本任务是发展生产力的依据是
A.
发展生产力是马克思主义思想路线的本质要求
B.
发展生产力是社会主义本质的内在要求
C.
发展生产力是解决社会主义初级阶段主要矛盾的客观要求
D.
发展生产力是体现社会主义制度优越性的基本条件
【单选题】The phrase “flagged up” (Para. 2) is the closest in meaning to
A.
found.
B.
marked.
C.
revised.
D.
stored.
【单选题】The phrase “flagged up” (Para. 2) is the closest in meaning to
A.
found.
B.
revised
C.
marked
D.
stored
【单选题】What tool is often used for cutting trees?
A.
an electric grinder
B.
an ax
C.
a receiver
【简答题】The phrase “flagged up” (Para. 2) is the closest in meaning to [A] found. [B] marked. [C] revised. [D] stored. 本题为单选题，请选出正确答案，谢谢！
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