【单选题】可用于检测位移、振动、液体的浓度、折射率的光电检测方法是()
【单选题】The cold wind (took their breath away).
A.
surprised them very much
B.
made it difficult for them to breathe
C.
made them feel very cold
D.
made it difficult for them to see things
【单选题】目前检测GHb的方法中,可用于自动生化仪的是
【单选题】It took them_________ to finish the work.