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问题 单项选择题

矿山企业必须对作业场中的有毒有害物质和( )进行检测。

A．井上空气含氧量

B．含氧量

C．空气含氧量

D．井下空气含氧量

答案

参考答案：D

解析： 矿山企业必须对作业场中的有毒有害物质和井下空气含氧量进行检测，保证符合安全要求。

问答题

Andrew and Ben were partners who owned a steak house. Andrew was quite keen to enlarge the business premises to accommodate more customers. Ben was opposed to it and said that they could not afford it. Andrew then contracted with Carol, an architect, to draw plans for the extension of the steak house. Carol did so and submitted an account for R10 000 for her professional services. Ben refuses to authorise payment and states that Andrew never had authority to contract with Carol.Required:Discuss whether the partnership is liable to pay Carol. (10 marks)
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单项选择题

阿米巴肠病的最重要确诊依据是（）

A.乙状结肠镜检查肠黏膜发现结肠溃疡

B.粪便中找到阿米巴滋养体

C.出现黏液脓血便，粪便中查见大量红细胞、少量白细胞

D.粪便中查见夏科雷登结晶

E.用抗生素治疗效果不佳，换用甲硝唑治疗有效
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