A. Battery
B. Generator
C. Motor
D. None

A. Becquerel
B. Marie Curie
C. Rontgen
D. None

A. increase
B. decrease
C. constant
D. None

A. 1g/cm3
B. 1000g/cm3
C. 10g/cm3
D. None

A.Carbon dioxide
B. Water Vapors
C. Ozone
D. CO? and H?O vapors

A. Electromagnetic field
B. Electromotive force
C. ElectroMagnet Force
D. All of these

A. 3* 10^10
B. 3*10^6
C. 3*10^8
D. 3*10^7

A. Vacuum pressure
B. Atmospheric Pressure
C. Water Pressure
D. None

A. High M.P
B. High B.P
C. Stable coefficient of expansion
D. All of these

A. Mass
B. Light
C. Power
D. Work