物质均具有失去电子的能力叫还原性。
参考答案:对
标记部件的类别有()
A.管道组件和支吊架部件
B.预制的管段
C.预制的支架部件
D.现场安装的支架
E.现场安装的管道
A high cube container is designed specifically to().
A.carry low density cargoes
B.protect fragile cargoes
C.stow cargoes with concentrated weights such as machinery
D.carry cargoes of very low stowage factors