项目监理机构收到施工单位工程材料、设备、构配件报审表后,应重点审查工程材料、设备、构配件的()。
A. 质量证明文件
B. 采购合同
C. 设计要求文件
D. 考查报告
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After a fire has been extinguished in a closed space, personnel may safely enter the space when ().
A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartments entrance
B. a lifeline and explosion proof flash light are used
C. all smoke and toxic fumes are removed and an adequate oxygen supply is present
D. overhaul has been completed to remove any possible source of re-ignitio
火车顶部取样时,可以站在车帮上取样。
A. 正确
B. 错误
已足额提取折旧但仍在使用的固定资产继续计算折旧从应纳税所得额中扣除。
A. 正确
B. 错误
旅行社产品的销售渠道包括:直接销售渠道、国内异地市场、间接销售渠道。
A. 正确
B. 错误