下面3题 只列综合算式，不用计算．

①阳光村要挖一条水渠，原计划每天修0.15千米，30天完成；实际只用了24天就完成了任务，实际每天修多少千米？

②3台碾米机每小时碾米3.6吨，照这样计算，增加2台同样的碾米机，每小时可以碾米多少吨？

③某修路队计划30天修路1650米，实际每天比计划多修11米，实际用了多少天完成？

What is a “Special Warning”? （）

A.An urgent message concerning a vessel in distress

B.A weather advisory about unusual meteorological or oceanographic phenomena hazardous to vessels

C.A broadcast disseminating an official government proclamation affecting shipping

D.A radio navigational warning concerning a particularly hazardous condition affecting navigation