A.0.l一0.2MPa B.0.2一0.3MPa C.0.4一0.5MPa D.0.6一0.7MPa
A.堿液 B.酸液 C.清水或柴油 D.汽油
A.可用鐵耙扒 B.可用鐵鍬刮 C.不準(zhǔn)用鐵鍬刮 D.可用鐵錘震擊