特种设备的制造、安装、改造单位应当具备的条件包括()
A.相适应的普工
B.相适应的技术工人
C.良好的生产环境
D.相适应的检测手段
E.健全的质量管理制度
参考答案:B, D, E
.
It was _______ was advertised on TV that made many customers buy the computer which was not so perfect as the ad said.
A.that
B.which
C.what
D.it
检查凸轮轴弯曲变形时,百分表摆差为0.01mm时,需用冷压校正法校正。