下列规划方法中,( )的本质是根据过去国民经济发展过程中所形成的某种比较固定的比例,确定计划期相应的计划指标。
A.速度比例法B.因素分析法C.定额法D.系数法
参考答案:D
The nurse is giving home care instructions to a client who just had a cataract removed and an intraocular lens implanted. What should the nurse tell the client
A. Don’t sleep on the operated side.B. Wear the eye shield continuously for 2 weeks.C. Aspirin may be taken for mild pain.D. Straining during bowel movements is allowe
描述物质的质量与速度关系的错误选项是()
A.物质的速度愈快,质量愈大
B.当物质的速度趋近光速时,该物质的质量趋近无穷大
C.物质的速度不可能超过真空中的光速
D.对于光子由于静止质量为零,光子的总能量就是其动能
E.物质的速度愈快,质量愈小