题目内容

What is the dialogue mostly about?

A. taking out a loan
B renegotiating terms
C. financing a new business
D. making an early payment

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What will the man likely do?

A. change his business plans
B. try to get a loan elsewhere
C. pay off some of his business's debts
D. ask for another accountant's opinion

制备生物医用材料时,建议从下列物质中选用()为交联剂交联胶原

A. 京尼平
B. 戊二醛
C. 乙醛
D. 甲醛
E. 醋酸

胶原大分子链上含量最多的氨基酸残基是

A. 色氨酸
B. 丙氨酸
C. 赖氨酸
D. 甘氨酸
E. 亮氨酸

在甲壳类动物中,alpha甲壳素通常与( )沉积在一起,形成坚硬的外壳。

A. 壳聚糖
B. 蛋白质
C. 纤维素
D. 矿物质
E. 色素

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