A.郵政問卷調(diào)差 B.電話問卷調(diào)查 C.送發(fā)問卷調(diào)查 D.上門調(diào)查 E.報刊問卷調(diào)查
A.55dB SPL B.45dB SPL C.35dB SPL D.65dB SPL E.75dB SPL
A.工作規(guī)范和道德規(guī)范 B.道德規(guī)范和法律規(guī)范 C.道德規(guī)范和品行規(guī)范 D.行為規(guī)范和法律規(guī)范 E.職業(yè)規(guī)范和法律規(guī)范