中心疏松一种连铸坯()缺陷。A、外部 B、形状 C、内部 发布时间:2020-04-14 11:46 │ 来源:www.tikuol.com 题型:单项选择题 问题: 中心疏松一种连铸坯()缺陷。A、外部B、形状C、内部
题型:单项选择题 When the manager goes out for vacation, he always leaves his secretary ____ the factory. [ ]A. in the charge of B. in charge of C. in charge D. in the charge 查看答案