What can you do?[ ]
A. Yes, I can.
B. I can water the flowers.
C. I can't do it.
答案:B
剖面图的标高和尺寸与立面图的标高和尺寸标注方法不一样,一般应标在剖面图的两侧,但也可将层高或细部标高直接标在图内,以便于寻找。( )
热导池检测器属于浓度型检测器。()