发动机的主要性能指标有()和可靠性、耐久性能指标。
A、动力性指标
B、经济性指标
C、运转性能指标
参考答案:A, B, C
运动治疗的强度是运动处方中的定量化核心。
A. I don’t think we should apply the basic principles of trade. B. There will be a turning point for our company if we observe the basic principles. C. Many companies are hit by the economic crisis, and our company is no exception. D. Little do we realize that our company has been affected by the current economic crisis.