下列忌火煅的药物是()
A.青礞石
B.牡蛎
C.朱砂
D.石决明
E.代赭石
参考答案:C
— _____________ is the weather?
— It's cold.[ ]
A. How
B. What's
C. How fine
D. What fine
五小电器常见的失爆现象有哪些?