সব প্রশ্নে ফিরে যান
English Grammar
The majority of electromagnetic waves emitted by the human body--
A) are above 760 millimicrons in length
সঠিক উত্তর
B) vary between 380 and 760 millimicrons in length
C) translate into thermographic techniques
D) are below 3890 millimicrons in length