【判断题】“Pipe in mouth” in the sentence “The old man stood under a big tree, pipe in mouth” can also be in the form of “with a pipe in his mouth”.
【简答题】Mouth -to -mouth resuscitation must not be stopped for more than ______ in s, until the victim is breathing on his own.
【单选题】He stood on the deck, _______ pipe in mouth.
【简答题】He was sitting in ____ chair, pipe in ____ mouth.
【单选题】按照渠道中每个层次同类中间商的多少,可将分销渠道分为: