在钢渣的陈放地从料堆内部1m处取足够数量的()样品,从3处以上取样混合后按分料器法或四分法处理,供试验使用。
A、钢渣
B、粗料
C、砾石
D、钢板
参考答案:A
阅读理解
Welcome to the 2012 London Olympic Games!
1. Who invented the sport of badminton?
A. Indians.
B. British
C. Chinese.
D. Koreans.
2. Which of these sports appeared earliest at the Olympics?
A. Archery.
B. Badminton.
C. Taekwondo.
D. Football.
3. Which of the following pictures shows the sport of "Taekwondo"?
我国能源企业在支撑国民经济增长和社会发展中发挥了巨大作用,能源自给率一直保持在()以上的较高水平。
A.90%
B.85%
C.80%
D.75%