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【单选题】
PCB板铜箔厚度为35um,如设计通过为:4A的电流,则导线最小宽度应为:( )。A.
(A)1.8mm
B.
(B)2mm
C.
(C)3.5mm
D.
(D)4.1mm
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举一反三
【单选题】There is no simple answer， is often the case inscience.
A.
as
B.
that
C.
when
D.
where
【判断题】There
is no simple relation of correspondence between utterances and sentences.
A.
正确
B.
错误
【简答题】There is no answer, is often the case in science.
【单选题】小儿无尿是指24小时尿量低于 小儿无尿是指24小时尿量低于
A.
0~30ml
B.
30~50 ml
C.
50~80rnl
D.
80~100ml
E.
100~120 ml
【简答题】(2013·高考山东卷)There is no answer，________ is often the case in science. A．as B．that C．when D．where
【单选题】______ is often the case in science, there is no simple answer
A.
That
B.
As
C.
When
D.
Where
【单选题】There is no simple _____ to this problem.
A.
absolution
B.
resolution
C.
solution
D.
ambition
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