【单选题】In yesterday’s football , our school football players performed well – they were in____ of the ball most of the time.
【简答题】砂石在料堆上取样时应均匀分布砂取()份,石子取()份,组成一组样品。
【判断题】砂检测的取样原则、数量:在料堆上取样时,取样部位应均匀分布,取样前先将取样部位表层铲除,然后由各部位抽取大致相等的砂12份,组成一组样品。
【简答题】Which of the following is NOT true of the British football players?
【简答题】(2.4)在料堆上取砂样时,应从不同部位随机抽取( )等份组成一组样品。(答案请写阿拉伯数字)
【单选题】砂石在料堆上取样时应均匀分布砂取()份,石子取16份,组成一组样品。
【判断题】在料堆上取砂样时,取样部位应均匀分布,取样前先将取样部位表层铲除,然后由各部位抽取大致相等的砂12份,组成一组样品()
【简答题】在料堆上取砂样时,应从不同部位随机抽取( )等份组成一组样品。(答案请写阿拉伯数字)