Ask the manager to certify this check.请银行经理来确认这张支票.Draw up unit worldwide EMI & EMS certify & standards introduce and approval.产品EMI电磁干扰 & EMS电磁 耐受度各国认证规划与法规介绍.I certify that the above provided information is true and ac...
Ethiopia, for instance uses the equivalent of just twenty kilos of oil per head a year.比如说，埃塞俄比亚每年的人均消费支出仅相当于20公斤的石油。By 1973 the government deficit equalled thirty per cent of GNP.到1973年，政府财政赤字相当于国民生产总值的30%。I agree with ...
Benzyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,丁酸和苄醇为原料合成丁酸苄酯.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Ethyl lact...