受压杆件钢板每米长度内波浪度应不大于()mm。 ["3","4","5","6"]
对专业技术人员来说,()是创新的原动力 ["A、责任意识","B、敬业意识","C、奉献意识","D、团结意识"]
优质碳素钢的含硫量小于或等于()%。 ["0.10","0.015","0.020","0.035"]
对专业技术人员来说,()是发挥想象力、创造力的起点 ["A、好奇心","B、兴趣","C、注意力","D、生活及工作品味"]
静电释放带来的问题有哪些()。 ["金属电迁移","金属尖刺现象","芯片产生超过1A的峰值电流","栅氧化层击穿","吸引带电颗粒或极化并吸引中性颗粒到硅片表面"]
深凹露天矿开采有哪些特点?