旅游开发
参考答案:一般是指为发挥、提升旅游资源对游客的吸引力,使得潜在的旅游资源优势转化成为现实的经济效益,并使旅游活动得以实现的技术经济行为。
电机或多级泵加入的润滑油必须符合轴承要求,轴承端盖内应加入()%润滑油,不要加满,防止散热不好引起过热。
A、50
B、60
C、70
D、80
What is suggested for your investment().
A.Distributing your money among different companies.
B.Investigating the company before investment.
C.Don’t invest all your money.
D.Comparing different companies before investment.