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[单选题]
根据比例的基本性质,将比例0.4:x=1.2:2,改写成方程是()
A.0.4×χ=1.2×2
B.0.4×1.2=χ×2
C.0.4×2=χ×1
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
C、0.4×2=χ×1
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.0.4×χ=1.2×2
B.0.4×1.2=χ×2
C.0.4×2=χ×1
C、0.4×2=χ×1
A.药材经炮制粉碎成细粉后制丸
B.药材经提取浓缩后制丸
C.根据药粉性质选择适当的炼蜜程度
D.根据药粉性质选择适当的合药蜜温
E.炼蜜与药粉的比例一般是1∶1~1∶1.5
A.①②③
B.②④⑤
C.①③⑤
D.③④⑤