一圆形线圈在均匀磁场中做下列运动时，那些情况会产生感应电流
A. 沿垂直磁场方向平移
B. 以直径为轴转动，轴跟磁场垂直
C. 沿平行磁场方向平移
D. 以直径为轴转动，轴跟磁场平行
对于涡旋电场，下列说法不正确的是
A. 涡旋电场对电荷有作用力
B. 涡旋电场由变化的磁场产生
C. 涡旋电场由静止电荷激发
D. 涡旋电场的电力线是闭合的
A meaningful mission statement should address topics such as the organization's
A. form of ownership and methods of financing.
B. self-concept and company philosophy.
C. advertising strategy and distribution plan.
D. tactical plans and contingency plans.
________ are broad, long-term accomplishments an organization wants to achieve.
A. Goals
B. Objectives
C. Directives
D. Agendas
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