【简答题】All the staff of the bank (work) ________ very hard last year and 20% more profit was gained.
【简答题】All the staff of the company (work)_______very hard year and 15%more profit was Gained.
【单选题】All the staff of the company (work)_______very hard year and 15%more profit was Gained.
【简答题】All the staff of the company (work)_______very hard year and 15% more profit was gained.
【判断题】All the staff of the company ( work ) working very hard last year and 15% more profit was gained.
【判断题】8 管内翅片虽然增加了传热面积,但是也改变了流体在管内的流动形势和阻力分布,泵功率的损失也会相应增加。