Our waiter, who seemed to have a bad cold, kept coughing on our table as he took our ____. [ ]

A. offer

B. bill

C. order

D. menu

冷焦水罐罐容700立方米，正常生产时液位控制在30%～70%，补水量是80t/h，冷焦给水量250t/h，则此罐可供水时间最长是（）分钟。

A、98

B、108

C、118

D、128