尊重求助者的意义在于（）。

A.使求助者最大限度地表达自已

B.使求助者获得自我价值感

C.可以唤起求助者的自尊心和自信

D.以上三点

After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.

A.hoist man

B.limit switch

C.brake handle

D.preventer bar