A.1500 B.1800 C.2000 D.2200
A.安全生产管理体系 B.安全生产保障体系 C.安全生产规章制度
A.2 B.3 C.4 D.5
A.31mm B.37mm C.41mm D.36mm
A.明显变形 B.可见裂纹 C.严重锈蚀 D.润滑情况
A.1 B.1.2 C.1.3 D.1.5
A.1350 B.1500 C.1650 D.1800
A.0.02%；0.02% B.0.02%；0.05% C.0.04%；0.02% D.0.06%；0.02%
