奥氏体不锈钢和珠光体耐热钢焊接时,焊缝的成分和组织决定于焊缝的()。
我国的规定,在使用静水力曲线图查取()曲线时,其计量长度应自船中处量起。
A. 方形系数Cb
B. 浮心距船中距离Xb
C. 漂心距基线高度
D. 横稳心M距船中距离
The purpose of cant frames in steel vessel is().
A. To support the overhang of the stern
B. To strength the plating against the pounding of the sea
C. To add srength to the deck beams which support the weather deck
D. To support the plating of a cylindrical tank
常用的有()反滤压(铺)盖、土工织物反滤压(铺)盖、梢料反滤压(铺)盖。
A. 黏土
B. 石块
C. 块石
D. 沙石