T68型卧式铣镗床负载运转检验项目有()。
A.钻孔
B.主轴镗孔
C.平旋盘车削法兰盘盘端面
D.平旋盘镗孔
E.主轴铣平面
F.主轴车内螺纹
参考答案:A, B, C, E
灭火器指针位于()色区域表示正常。
A、红
B、黄
C、蓝
D、绿
Your vessel has a midship engine room and the cargo is concentrated in the end holds.The vessel is().
A.sagging with tensile stress on main deck
B.sagging with compressive stress on main deck
C.hogging with tensile stress on main deck
D.hogging with compressive stress on main deck