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【单选题】
一电子以速度 垂直地进入磁感应强度为 的均匀磁场中,此电子在磁场中运动轨道所围的面积内的磁通量将A.
正比于B，反比于
B.
反比于B，正比于
C.
正比于B，反比于v
D.
反比于B，反比于v
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皮皮学刷刷变学霸
举一反三
【简答题】Empewerment is a good supplement to the delegation of authority downward.
【多选题】不同的网络设备和网络互联设备实现的功能各不相同，主要取决于设备工作在OSI模型的第几层。下列哪些设备工作在数据链路层?( )
A.
网桥
B.
传统交换机
C.
路由器
D.
网卡
E.
集线器
【简答题】向下的 downward
【简答题】Logic yzers are designed to capture data from multi-pin devices and buses. The term “capture rate” refers to how often the inputs are sampled. It is the same function as the time base in an oscill...
【简答题】A ship cannot function without the various pumping systems placed in or controlled from the machinery spaces. The pumping systems are of major importance and they are many and varied. Some systems sup...
【简答题】A. backward B. forward C. onward D. downward
【单选题】患者,男性,37岁,患胃溃疡9年余。行毕‖式胃大部切除术后第5d,突发右上腹剧痛,腹部有明显压痛、反跳痛和腹肌紧张。首先考虑并发了
A.
吻合口出血
B.
急性输人襻梗阻
C.
倾倒综合征
D.
吻合口梗阻
E.
十二指肠残端破裂
【单选题】In a downward information flow, information:
A.
originates at the lowest level of the organization and is passed downward through the various levels.
B.
originates at a higher level and is passed to lower levels.
C.
flows between functional business units and work teams.
D.
is communicated from and to customers, suppliers, distributors, and other partners for the purpose of doing business.
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