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【简答题】
电路如下图所示: (1)当 R =0时,电流 I 是( )A; (2)当 I =0时,电阻 R 是( )Ω; (3)当 R =∞时,电流 I 是( )A。
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反馈参考答案：
举一反三
【简答题】高空作业必须设有专人监护,停电作业时,每个监护人的监护范围不超过____跨距,在同一组硬(软)横跨上作业时不超过 4条股道.
【单选题】The smell in the kitchen and the dirty mixing bowl in the sink led the little boy to _____ that his mother had just baked cookies.
A.
disrupt
B.
conclude
C.
confront
D.
limit
【单选题】To makes pancakes, in a large mixing bowl, combine flour and water, stirring constantly until all water .
A.
take in
B.
is taken in
C.
taken in
D.
is taking in
【单选题】Unit 4 To makes pancakes, in a large mixing bowl, combine flour and water, stirring constantly until all water ______ .
A.
take in
B.
taken in
C.
is taken in
D.
is taking in
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