[单选] 京东商城在第几轮融资时出现了问题（）。

南部非洲有哪些主要特点？ 向秦始皇建议焚书坑儒的是（）。 李斯。 吕不韦。 赵高。 胡亥。 After fuel tanks have been topped off, which of the listed procedures should be followed next?（） The pressure-vacuum relief valve should be reset。 The tanks should be made seaworthy to prevent contamination。 The tanks should be sounded to make sure the levels are not rising。 The tanks should be marked with a bull stamp on the manifold filling valve。 境内的认证机构、检查机构、实验室取得境外认可机构认可的，应当向国务院认证认可监督管理部门（） 备案。 登记。 报告。 说明。 Gasoline fumes tend to（）. settle near the bottom of the bilge。 settle near the top of the bilge。 settle evenly throughout all levels of the bilge by mixing with air。 disperse to atmosphere。 京东商城在第几轮融资时出现了问题（）。