A. cohesion and gravity
B. adhesion and surface tension
C. gravity only
D. surface tension only
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A. a beam of monochromatic coherent light
B. a beam of monochromatic incoherent light
C. highly penetrating X-rays
D. a beam of a fast moving neutron rays
A. diesel engine
B. gasoline engine
C. steam engine
D. steam turbine
A. asthma
B. scurvy
C. measles
D. diabetes
A. carbohydrates
B. protein
C. fat
D. None above
A. Alexander Fleming
B. Paul Ehlrich
C. Robert Koch
D. Selman Waksman
A. Myopia
B. Astigmatism
C. Presbyopia
D. Hypermetropia
A. late August
B. late June
C. early September
D. early January
A. white cells
C. proteins
B. red cells
D. salts
A. coinage
B. coinology
C. numismatics
D. metallurgy
