1kmol的理想气体质量为44.8kg则在标准状态下该气体的密度为()kg/m3。
A、3
B、2.5
C、2
D、1.5
参考答案:C
— What do you think of the car on exhibition?
— Well, great! But I don't think much of ______ you bought.
[ ]
A. it
B. one
C. that
D. which
下列不属于二氧化碳用途的是( )
A.急救
B.灭火
C.人工降雨
D.制碳酸饮料