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问题 单项选择题

患者，男，43岁，因腹痛，消瘦来诊，行胃镜检查示胃溃疡。

该患者腹痛发生的机制不包括

A．对胃酸刺激的痛阈降低

B．局部肌张力增高

C．胃酸对溃疡面的刺激

D．溃疡及其周围组织的炎性病变使局部内感受器的敏感性降低

E．浆膜面受侵

答案

参考答案：D

单项选择题

在Visual FoxPro中，可视类库文件的扩展名是( )。

A．.dbf
B．.sex
C．.vcx
D．.dbc
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单项选择题

Ian O’Sullivan, CFA, is the owner and sole employee of two companies, a public relations firm and a financial research firm. The public relations firm entered into a contract with Mallory Enterprises to provide public relations services. According to the contract, O’Sullivan received 40 000 shares of Mallory stock in payment for his services. Over the next 10 days, the public relations firm issued several press releases that discussed Mallory’s excellent growth prospects. O’Sullivan, through his financial research firm, also published a research report recommending Mallory’s stock as a "buy". According to the Standards of Practice Handbook, O’Sullivan is required to disclose his ownership of Mallory’s stock in the:（）

A. press releases only.

B. research report only.

C. both the press releases and the research report.
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