A.累計(jì)值為40~50mm,變化速率為10~15mm/d B.累計(jì)值為50~70mm,變化速率為10~15mm/d C.累計(jì)值為40~50mm,變化速率為4~6mm/d D.累計(jì)值為50~70mm,變化速率為4~6mm/d
A.1次/1d B.1次/2d C.2次/1d D.1次/3d
A.5B.10C.20D.30