A.abandon ship B.assist in taking whatever action is necessary to avoid collision C.hold course and speed D.sound a distress signal
A.推動(dòng)B.發(fā)展C.支撐D.競爭
A.由買產(chǎn)品轉(zhuǎn)向賣服務(wù)B.由賣服務(wù)轉(zhuǎn)向賣產(chǎn)品C.什么都不賣