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【单选题】
一根无限长的直线电流通流I，位半无限大磁介质的分界面内，如下图所示，求两介质中的磁场强度。（ ）【图片】A.
; .
B.
; .
C.
; .
D.
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反馈参考答案：
举一反三
【简答题】石油主要由 、 两种元素组成,还含有少量 、 、 等元素。
【单选题】--- Why did you leave your city last year? --- Because I _ __ a new job in another city.
A.
offered
B.
am offered
C.
was offered
【单选题】Why was the woman sent to a big city?
A.
Because she asked for this.
B.
Because local doctors were confused about her disease.
C.
Because the big city has more money to give her.
D.
Because dortors in the big city would like to treat her for free.
【简答题】餐饮企业流程再造理论应用主要体现在哪些方面?其全面导入流程再造的主要途径有哪些?
【单选题】—Why did you leave your city last year? —Because I _____ a new job in another city. [ ]
A.
offered
B.
am offered
C.
was offered
D.
offer
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