50. Which combination of color is the convenient during day and night time ?
A.Low temperature and high pressure
B.High temperature and low pressure
C.Low temperature and low pressure
D.High temperature and high pressure
51. The instrument that measures and records the relative humidity of air?
52. The shape f our Milky Way galaxy is?
D.None of these above
53. The different colors of different stars endue to the variation of?
54. The fundamental scientific principle in the operation of battery is?
55. Instrument used to measure the force and velocity of the wind is?
56. Woolen clothes keeps the body warm because?
A.Wool increases the temperature of the body
B.Wool is a bad conductor
C.Wool absorbs radiant heat from outer object
D.Wool rejects head from the outer objects
Page 8 of 18