图是未画出绕线的通电螺线管，螺线管旁边有一个小磁针，其稳定指向如图所示，请画出螺线管的绕线方法。
Daniel is ________ his purse, but he can't ________ it. [ ]
A. looking for; find
B. seeing; look for
C. finding; look at
D. looking at; see
力偶对任一轴上的投影代数和（），力偶对其作用平面内任一点之矩恒等于（）。
