从价值规律的角度看货币是固定充当一般等价物的特殊商品。()
参考答案:对
I suppose you do notneedtoworry about his safety.
A B C D
渣系统密度计显示固含量升高可能原因是()
A.气化炉炉温偏低
B.渣水排放量过小
C.仪表故障
D.煤种变化