以下哪个不是位置公差?() ["圆度","平行度","垂直度","同轴度"]
按照矿车在井底车场运行方式的不同,并底车场分为()车场。 ["环形式","折返式","立式","梭式","卧式"]
散水的宽度一般为()。散水表面坡度一般为3%~5%。 ["200~1000mm;","600~1000mm;","800~1500mm;","1000~2000mm。"]
产业资本的循环形式包括() ["货币资本的循环","生产资本的循环","商品资本的循环","不变资本的循环","可变资本的循环"]
地面排水:为排除室内地面的积水,地面应有一定的坡度,一般为()。 ["0.5%~2%;","1%~1.5%;","1%~3%;","2%~5%。"]
体育市场定位战略有哪几类?