铝瓷是在低熔瓷中加入了()。
A.10%~30%氧化锆
B.40%~50%氧化铝
C.20%~30%二氧化硅
D.40%~50%氧化镁
E.30%~40%氧化钙
参考答案:B
Where does the rain come from?[ ]
A. It comes from the clouds.
B. It comes from the vapour.
C. It comes from the water.
D. It comes from the water in the river.
银行存款余额调节表是用来调整账簿记录、使账实相符的原始凭证。( )