根尖周囊肿最重要的诊断依据是
A.根尖周X线透射区周边有白线围绕
B.根管内有浅黄透明囊液
C.囊液可见胆固醇结晶
D.牙髓无活力
E.包括以上各项
参考答案:A
两个数相乘(两个数都大于0),如果把两个因数都扩大10倍,它们的积就扩大100倍.______. (判断对错)
As we are _____ Table Cloth, we should be pleased if you would send us your best quotations.
A.in the market forB.on the market forC.entering the market for D.at the market for