【25】A．formulasB．marksC．symbolsD．signals

What is NOT a distress signal （).

Which is NOT a distress signal （).A.A continuous sounding with any fog signal apparatusB.A

____，the bus started at once.A、The signal was givenB、The signal givingC、The signal give

【C2】A．reasonB．noticeC．warningD．signal

_____________ 查看材料A.meansB.marksC.saysD.indicates

材料题请点击右侧查看材料问题 查看材料A.digitsB.marksC.i