单选题
发布日期:2021-08-03
the transmission of
transmitted by
transmission into
the transmitting for
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水平仪用于检验各种机床及其他机械设备导轨的平直度,机件相对位置的平行度以及设备安装的水平位置和垂直位置,以测量零件的()。
企业要扩大市场份额,可以有两种策略,一是价格不变,提高产品质量;二是产品质量不变,()。
加快转变经济发展方式的主攻方向是()
肺血栓栓塞导致低血压或休克的机制是()。
收容教养的对象是()。
系统损伤医疗体育的意义是什么?
片剂包糖衣时糖浆的浓度一般为()(g/g)
浆砌石是指用()砌筑而成浆砌石体。
对于绕地卫星来说,环绕速度至少应为( )km/s。
当电弧电压增加时,熔池的最大深度增大;焊接电流增加,熔池的最大宽度增大。
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