【单选题】“三品一标”是指无公害农产品、绿色食品、有机食品和农产品地理标志。其中( )属于高端农产品范畴,要求禁止使用一切人工合成物质和转基因技术,面向高端消费者采用高价销售的市场导向机制,是一种企业行为,政府积极推动有机食品认证和生产经营。
【多选题】测定蔬菜中叶酸的含量可以采用的方法有( )
【单选题】As the goods are ready for shipment, we ()your L/C to be opened immediately.
【单选题】As the goods are ready for shipment, we ___ your L/C to be opened immediately.
【单选题】Look at these extracts from correspondence.Choose the correct answer to state what the writer wants to know in each case. Bearing in mind the difficulties you are having with obtaining components, we ...
A.
what difficulties we are having
B.
what components we are obtaining
C.
when the goods will be delivered
【简答题】安装开启式负荷开关时,应将开关的熔体部分用 直接连接,并在出线端另外加装熔断器作 ;安装组合开关和低压断路器时,则在电源进线侧加装 。
【单选题】Suppose goods A and B are substitutes for each other. We would expect the cross-price elasticity between these two goods to be
C.
either positive or negative. It depends whether A and B are normal goods or inferior goods.
D.
either positive or negative. It depends whether the current price level is on the elastic or inelastic portion of the demand curve.
【单选题】“三品一标”是指无公害农产品、绿色食品、有机食品和农产品地理标志。其中( )属于高端农产品范畴,要求禁止使用一切人工合成物质和转基因技术,面向高端消费者采用高价销售的市场导向机制,是一种企业行为,政府积极推动有机食品认证和生产经营。
【单选题】在数据库的三级模式中,可以有任意多个()