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问题 单项选择题 B型题

SPECT脑血流灌注显像（）。

A.发病的同时

B.发病后6小时内

C.发病后24小时内

D.发病后24～48小时

E.发病后72小时

答案

参考答案：A

解析：1.SPECT脑血流灌注显像在发病的零时间内已经呈阳性结果。2.头颅CT扫描在发病后24～48小时病灶可显示为低密度区。3.头颅MRI在发病后6小时内可以显示低信号病灶。

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单项选择题

我国《公司法》第149条规定，董事、高级管理人员不得（）。

A.擅自披露公司秘密

B.违反竞业禁止义务

C.不得侵占公司财产

D.不得利用职务获得非法利益
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