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问题 单项选择题

ActiveX组件中______组件提供可用于在计算机文件系统中检索和修改文件。

A．Content Rotator
B．File Access
C．Content Linking
D．Database Access

答案

参考答案：B

单项选择题

打破自身耐受的原因之一是（）。

A．与自身抗原有相似结构成分的微生物进人体内

B．Ts细胞功能障碍

C．Ts细胞增多

D．免疫系统不问断地与低剂量自身抗原接触

E．内源性可溶性抗原的产生。
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单项选择题

While working abroad, U. S. citizen Dirk Senik purchases a foreign bond with an annual coupon of 7.5 percent for 95.5. One year later, the exchange rate between the dollar and the foreign currency remains unchanged and he sells the bond for 97.25, resulting in a holding period return of 9.7 percent. If the foreign currency had depreciated in relation to the dollar, Senik’s return would be:（）

A. greater than 9.7 percent.

B. equal to 9.7 percent.

C. less than 9.7 percent.
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