（）是指在保险标的物发生推定全损时，由被保险人把保险标的物的所有权转让给保险人，而向保险人请求赔付全部保险金额。
参考答案：委付
—Could you tell me _______ to go to Hainan by air?
—Just a minute, please. I have to check my computer. [ ]
A. how much does it cost
B. how much did it cost
C. how much it cost
D. how much it costs
