当滑轮轮槽厚磨损()即可报废。
A.10%
B.20%
C.30%
参考答案:B
与国际形态分类法中的大小结节混合型肝硬化相对应的是()
A.胆汁性肝硬化
B.门脉性肝硬化
C.淤血性肝硬化
D.寄生虫性肝硬化
E.坏死后性肝硬化
All lifeboats,rescue boats,and rigid-type liferafts shall be stripped,cleaned,and thoroughly overhauled at least once every().
A.6 months
B.year
C.18 months
D.two years