【单选题】While introducing your work, you can say ( ).
A.
I work in fiance department.
B.
I work in a finance department.
C.
I work for finance department.
D.
I work for a finance department.
【判断题】We should include everything on the medicine package while introducing medicine to patients.
【简答题】已知点P到两个定点M(-1,0)、N(1,0)距离的比为 ,点N到直线PM的距离为1,求直线PN的方程。
【简答题】While introducing her company, Ms. Smith takes out a blue brochure.
【简答题】已知点P到两定点M(﹣1,0)、N(1,0)距离的比为 ,点N到直线PM的距离为1,求直线PN的方程.
【简答题】已知点M为抛物线y 2 =4x上一点,若点M到直线l 1 :x=-1的距离为d 1 ,点M到直线l 2 :3x-4y+12=0的距离为d 2 ,则d 1 +d 2 的最小值为______.