成牙本质细胞被包埋在修复性牙本质 中,以后这些细胞变性,很像骨组织,称为
A. 罩牙本质
B. 球问牙本质
C. 骨样牙本质
D. 透明牙本质
E. 修复性牙本质
能使酶蛋白变性的物质是
A. 激动剂
B. 蛋白变性剂
C. 激活剂
D. 竞争性抑制剂
E. 非竞争性抑制剂
最先形成的紧靠釉质的一层原发性牙 本质,其胶原纤维的排列与牙本质小管 平行,该牙本质是
A. 罩牙本质
B. 球问牙本质
C. 骨样牙本质
D. 透明牙本质
E. 修复性牙本质
Dear Mr. Green,Please ship us orange marmalade as per the following terms:Quantity: 20,000 jarsUnit: 1 kg per jarDescription: Orange marmalade, Quality A2Price: US $ 2.30 per jar CIF GuangzhouShipment: By July 15, 2002Mode of transport: Ocean freightMarks: SIC in a trianglePayment: Irrevocable letter of credit by draft at sightDiscount: 3 % special discountWe are waiting for your acknowledgement.Sincerely××× What discount does the company offer()