如果使用杠杆是为了省力，那么应选用动力臂______阻力臂的杠杆，如果使用杠杆是为了少移动距离，那么应选用动力臂______阻力臂的杠杆．（填“大于”、“小于”或“等于”）．

What does the term to navigate with caution mean?（）.

A.To navigate intentionally

B.To navigate intensely

C.To navigate carefully

D.To navigate completely