电是属二次能源,它由一次能源如煤、石油、水或核原料等经过发电厂加工得来的。
参考答案:对
1939年,明确提出以马克思主义为指导,主编《教育学》的教育家是( )。
A.凯洛夫 B.赞科夫 C.布鲁纳 D.维果斯基
Which of the following nursing diagnoses would be most appropriate when teaching the mother of a toddler()
A. Activity intolerance.
B. Risk for injury.
C. Delayed growth and development.
D. Impaired mobility.