A.80,IF80 B.180,IF180 C.380,IF380 D.1500,IF1500
A.運(yùn)動(dòng)粘度,18 B.運(yùn)動(dòng)粘度,7 C.恩氏粘度,7 D.雷氏粘度,18
A.1% B.1.5% C.2% D.2.5%