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问题 单项选择题

145～147男，23岁，间断脓血便2年，大便成形或糊状，每日1～3次，有时里急后重，抗菌素治疗无效

A．溃疡性结肠炎

B．C．rohn病

C．慢性细菌性痢疾

D．肠结核

E．阿米巴肠炎

答案

参考答案：A

填空题

在计算机中，一个字节由______个二进制位组成。
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单项选择题

Which of the following circumstances is an example of event risk（）

A. A currency devalues due to foreign exchange market forces.

B. A local government regulatory agency introduces more stringent clean-water requirements that will significantly reduce the cash flow of an area paper mill.

C. The U. S. Federal Reserve unexpectedly increases interest rates by 100 basis points.
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