【单选题】Was ist der Mann von Beruf?
【简答题】一热机在1000K和300K的两热源之间工作.如果(1)高温热源提高到1100K,(2)低温热源降到200K,求理论上的热机效率各增加多少?为了提高热机效率哪一种方案更好?
【单选题】Was ist der Mann von Beruf?
【单选题】某产品各种成本核算后的价格是 28 元人民币,运费是 12 元,商家预期利润是 40% ,平台佣金率是 5%, 预计打八折,人民币兑美元汇率是一美元兑换 6 元人民币,请问产品包邮价是多少?(保留两位小数)
【多选题】在进行报价环节时,需要告知客户哪些报价信息?
【简答题】Listen and fill in the following blanks. When you talk to yourself in a foreign language, you don ’ t have to feel 1.________ , because nobody can 2.________ you. You can talk to yourself about 3.____...
【判断题】You can always talk about yourself. Don ’ t ask questions or listen.
【单选题】37岁王女士,妊娠36周检查发现妊娠期高血压疾病,2h前突然发生持续性腹痛伴阴道少量流血,面色苍白。首先考虑为
【简答题】Listen and fill in the following blanks. When you talk to yourself in a foreign language, you don ’ t have to feel 1.________ , because nobody can 2.________ you. You can talk to yourself about 3.____...