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【单选题】
大电流接地系统地绝缘水平应按( )考虑。A.
相电压
B.
线电压
C.
过电压
D.
零序电压
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反馈参考答案：
举一反三
【单选题】867随着经济的发展,人们对物流的认识也不断深化,并将物流从流通中分离出来使之成为一个独立的领域。物流属于服务行业,物流系统的本质 ( )
A.
以成本为中心
B.
以利润为中心
C.
以效率为中心
D.
以用户为中心
【简答题】社会保障基金的主要来源有哪些?
【单选题】Hearing the news that he won the first in the competition，his voice trembled ________ excitement. [ ]
A.
for
B.
in
C.
with
D.
at
【单选题】David’s effort was ______, because he won the first prize in the English speech contest, which made his classmates surprised.
A.
paid off
B.
paid back
C.
paid for
D.
paid up
【简答题】He won the first prize of high jumping in the sports meet (hold)______ last week.
【单选题】To say that public speaking is a way to make a difference about something we care about is to recognize that public speaking is
A.
a form of empowerment.
B.
a skill similar to conversation.
C.
an art more than a science.
D.
all of the above.
E.
b and c only.
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