题目内容

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

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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（）

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 does the demander need（）

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××× How will the goods be transported（）