【单选题】The ( )which is found in the room after the guest check out should be kept for 3 months.
【判断题】叶轮的作用是将原动机的机械能传递给流体,使流体的压力能及动能均有所提高。( )
【单选题】Benjamin Franklin’ s best writing is found in his masterpiece ________ .
B.
Poor Richard's Almanac
【判断题】S elling virtual properties as a C2C e-commerce activity is found mostly in Asia, especially in China .
【单选题】The ( )which is found in the room after the guest check out should be kept for 6 months-1 years.
【判断题】The Japanese distribution structure is similar to the one found in the U.S. or in Europe.
【判断题】资本主义基本矛盾是生产资料资本主义私人占有和生产社会化之间的矛盾。