A.0.5,0.4 B.0.5,0.2 C.1,0.4 D.1,0.2
A.攝像盤煤儀 B.紅外盤煤儀 C.超聲波盤煤儀 D.便攜式激光盤煤儀
A.連續(xù)采樣 B.質(zhì)量基采樣 C.間斷采樣 D.隨機(jī)采樣